Hanging head and detachable fishing head thereof

Abstract

The utility model relates to a detachable hanging head which comprises a hanging head body, an outer sleeve, a wireless inner ring, a grounding ring, a coaxial cable, a gland and a fishing head shell, the hanging head body is sleeved with the wireless inner ring and the grounding ring, and the wireless inner ring and the grounding ring extend to the free end of the hanging head body along the outer portion attached to the hanging head body. The wireless inner ring, the grounding ring and the coaxial cable are sleeved with the outer sleeve, the outer sleeve abuts against the hanging end of the hanging head body, the hanging head body is sleeved with the gland, the gland is connected with the hanging head body through a bolt and abuts against the outer sleeve, and the assembled hanging head is installed in the fishing head shell through a bolt and fixed through a stud. No mechanical special welding is needed, replacement and installation engineering can be easily completed in a maintenance room, and due to the fact that the outer sleeve is integrated and does not need a high-strength adhesive for bonding, time, labor and cost are saved.

Description

Technical Field

[0001] The present application relates to the technical field of hanging heads, and in particular to a hanging head and a detachable fishing head thereof. Background Art

[0002] In the field of oil well logging, stored drill pipe systems dominate horizontal well logging in terms of frequency of use, logging technology, safety, and efficiency. The key to these systems lies in the lifting head. It not only connects the lifting and logging instruments, but also plays a crucial role in ensuring successful gripping and release, and establishing wireless communication. Therefore, the lifting head is the lifeblood of these systems.

[0003] Traditionally, the pendant head was a one-piece design, with the coaxial cable wrapped around a wireless inner ring. The two halves of the outer jacket were then bonded with a high-strength adhesive. The two halves were then secured using other structures, requiring specialized welding machinery. Finally, the coaxial cable was assembled into a three-piece Φ6 sleeve. This design approach was difficult to assemble and maintain on-site. Furthermore, because the maintenance room lacked specialized welding machinery, maintenance was costly and time-consuming, presenting numerous drawbacks. Utility Model Content

[0004] In view of this, the present application proposes a hanging head and a detachable fishing head thereof, which do not require bonding and welding for assembly.

[0005] According to one aspect of the present application, there is provided a detachable hanging head, comprising: a hanging head body, an outer cover, a wireless inner ring, a grounding ring, a coaxial cable and a gland;

[0006] One end of the hanging head body in the longitudinal direction is a hanging end, and the other end extends to a free end, the free end of the hanging head body is provided with an external thread, and the external thread is spaced a preset distance from the hanging end of the hanging head body;

[0007] The wireless inner ring and the grounding ring are sleeved on the outside of the hanging head body, adjacent to the hanging end of the hanging head body, the coaxial cable is electrically connected to the hanging end of the hanging head body, and extends along the outside of the hanging head body to the free end of the hanging head body, the outer sleeve is sleeved on the outside of the wireless inner ring, the grounding ring and the coaxial cable, and abuts against the hanging end of the hanging head body;

[0008] The pressure cover is an annular structure with an internal thread on the inside, and the internal thread matches the external thread. The pressure cover is sleeved on the hanging head body and is bolted to the hanging head body, and the pressure cover abuts against the end of the outer sleeve away from the hanging end of the hanging head body.

[0009] In a possible implementation, the hanging head further includes: a common flat key;

[0010] A first flat key groove is provided on the side wall of the hanging head body;

[0011] A through second flat key groove is formed on the outer sleeve, and the second flat key groove corresponds to the first flat key groove;

[0012] The common flat key matches the first flat key groove and the second flat key groove, and the common flat key is embedded in the first flat key groove and the second flat key groove.

[0013] In a possible implementation, a cable routing groove is provided on a side wall of the hanging head body along a length direction, and the cable routing groove extends to a free end of the hanging head body.

[0014] In a possible implementation, the hanging end of the hanging head body abuts against one end of the outer sleeve, and the hanging end of the hanging head body is bent toward the free end of the hanging head body to cover the end of the outer sleeve abutting against the hanging end.

[0015] In a possible implementation, the gland is a hollow cylindrical structure, and the cross-sectional area gradually decreases along the axial direction of the gland;

[0016] The end of the gland with a smaller cross-sectional area has the same cross-sectional area as that of the outer sleeve, and the end of the gland with a smaller cross-sectional area abuts against the outer sleeve.

[0017] A detachable fishing head, according to the above-mentioned hanging head, is characterized by comprising: a fishing head housing and mounting bolts;

[0018] The fishing head shell is a hollow structure with two ends open, one end is a tapered opening, and the other end is a mounting opening, and a first bolt hole is provided in the fishing head shell adjacent to the mounting opening;

[0019] The hanging head is installed inside the fishing head shell, and the hanging end of the hanging head abuts and seals against the tapered opening of the fishing head shell. A second bolt hole is formed at the free end of the hanging head body, and the second bolt hole corresponds to the first bolt hole. The mounting bolt passes through the first and second bolt holes to fix the fishing head shell and the hanging head.

[0020] In a possible implementation, the gland has a preset thickness.

[0021] In a possible implementation, the mounting hole of the fishing head housing is provided with an internal mounting thread, the external mounting thread matches the external thread on the hanging head, and the fishing head body is threadedly connected to the hanging head.

[0022] The beneficial effects of the detachable hanging head of the embodiment of the present application are as follows: compared with the conventional hanging head which is one-piece and requires high-strength adhesive bonding or special mechanical welding, the present application adopts a bolt connection method, using a pressure cover to connect with the hanging head bolt, and abutting the outer shell, thereby completing the fixation of the outer shell, the wireless inner ring and the grounding ring, and then using the mounting bolts to fasten the installation port position of the salvage head shell and the free end position of the hanging head to complete the installation and fixation of the salvage head shell for the hanging head, without any special mechanical welding, and the replacement and installation project can be easily completed in the maintenance room. Moreover, because the outer shell is one-piece, it does not require high-strength adhesive bonding, saving time, labor and cost.

[0023] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

[0025] Figure 1 A schematic diagram showing the main structure of a detachable fishing head according to an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the main structure of the hanging head according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0028] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0030] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0031] In addition, numerous specific details are provided in the detailed description below to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0032] Figure 2 A schematic diagram showing the main structure according to an embodiment of the present application is shown. Figure 1As shown, the hanging head of the embodiment of the present application includes: a hanging head body 10, an outer sleeve 20, a wireless inner ring 30, a grounding ring 40, a coaxial cable 70 and a pressure cover 50. One end of the hanging head body 10 in the length direction is a hanging end, and a free end is extended from the other end. The free end of the hanging head body 10 is provided with an external thread, and the external thread is spaced apart from the hanging end of the hanging head body 10 by a preset distance. A preset safety distance is maintained between the threaded area and the hanging end, ensuring the stability and ease of use of the hanging head 1, and facilitating the installation of the wireless inner ring 30 and the grounding ring 40 between the hanging end and the thread. The wireless inner ring 30 and the grounding ring 40 are arranged on the outside of the hanging head body 10, adjacent to the hanging end of the hanging head body 10. The coaxial cable 70 is electrically connected to the hanging end body of the hanging head body 10, and extends along the outside of the hanging head body 10 to the free end of the hanging head body 10. The layout helps to optimize The signal transmission path ensures a good grounding effect, and the coaxial cable 70 is electrically connected to the hanging end body of the hanging head body 10. It extends along the outside of the hanging head body 10 until it reaches near the free end, providing a reliable channel for stable signal transmission. The outer sleeve 20 is mounted on the outside of the wireless inner ring 30, the grounding ring 40 and the coaxial cable 70, and abuts against the hanging end of the hanging head body 10, effectively protecting the internal electrical components from interference and damage from the external environment. The pressure cap 50 is an annular structure with an internal thread on the inside, and the internal thread matches the external thread. The pressure cap 50 is mounted on the hanging head body 10 and is bolted to the hanging head body 10, and the pressure cap 50 abuts against the end of the outer sleeve 20 away from the hanging end of the hanging head body 10. The pressure cap 50 is tightly combined with the hanging head body 10 by bolt connection, thereby achieving effective fixation and sealing of the internal components of the hanging head 1.

[0033] In this embodiment, compared with the conventional hanging head 1 which is one-piece and requires high-strength adhesive bonding or special mechanical welding, the present application adopts a bolt connection method, using a pressure cap 50 to be bolted to the hanging head 1 and abutting against the outer shell 20, thereby completing the fixation of the outer shell 20, the wireless inner ring 30 and the grounding ring 40, and then using the mounting bolts 3 to tighten the installation position of the fishing head shell 2 and the free end position of the hanging head 1 to complete the installation and fixation of the fishing head shell 2 for the hanging head 1. No special mechanical welding is required, and the replacement and installation project can be easily completed in the maintenance room. Moreover, because the outer shell 20 is one-piece, high-strength adhesive bonding is not required, saving time, labor and cost.

[0034] In one specific embodiment, the hanging head 1 further includes a common flat key 60. A first flat key slot is defined on the side wall of the hanging head body, and a second flat key slot 60 is defined through the outer cover 20. The second flat key slot 60 corresponds to the first flat key slot, and the common flat key 60 mates with the first flat key slot and the second flat key slot 60. The common flat key 60 serves as a connecting member, and its size and shape match the first flat key slot and the second flat key slot 60. When the flat key 60 is embedded in the two slots, it can effectively prevent relative rotation or slippage between the hanging head body 10 and the outer cover 20, thereby greatly enhancing the stability and durability of the assembly.

[0035] In one embodiment, a cable 70 routing trough is defined along the length of the sidewall of the pendant head body. The trough extends to the free end of the pendant head body 10, preventing the cables 70 from becoming disorganized within the housing 20 and reducing signal loss and performance degradation caused by bending or squeezing of the cables 70. Furthermore, the provision of the cable 70 routing trough improves installation convenience and ease of maintenance. Users can easily access, adjust, and replace the cables 70 through the trough without disassembling the entire assembly, significantly improving work efficiency and flexibility.

[0036] In a specific embodiment, the hanging end of the hanging head body 10 abuts against one end of the outer cover 20, and the hanging end of the hanging head body 10 is bent toward the free end of the hanging head body 10, covering the end of the outer cover 20 abutting against the hanging end, so as to facilitate the abutment of the outer cover 20 against the hanging end of the hanging head 1 for installation.

[0037] In one specific embodiment, the gland 50 is a hollow cylindrical structure with a cross-sectional area that gradually decreases along the axial direction of the gland 50. The end of the gland 50 with a smaller cross-sectional area is the same as the cross-sectional area of ​​the outer sleeve 20, and the end of the gland 50 with a smaller cross-sectional area abuts the outer sleeve 20. Because the outer sleeve 20 is a hollow cylindrical structure with the same cross-section at both ends, when one end abuts the hanging end of the hanging head 1, the cross-sectional area of ​​the gland 50 is the same as the cross-sectional area of ​​the outer sleeve 20, facilitating secure installation of the outer sleeve 20 on the hanging head 1.

[0038] A detachable fishing head, according to the above hanging head 1, further comprising: a fishing head shell 2 and a mounting bolt 3, such as Figure 1The fishing head housing 2 is a hollow structure with two openings at both ends. One end has a tapered opening, and the other end serves as a mounting opening, facilitating its mating with the hanging head 1 and preventing debris or moisture from entering the housing 2 to a certain extent, thereby ensuring the sealing and safety of the assembly. The other end is designed as a mounting opening for connection and fixation with the hanging head 1. A first bolt hole is provided in the fishing head housing 2 near the mounting opening. The hanging head 1 is installed within the fishing head housing 2. The hanging end of the hanging head 1 abuts and seals against the tapered opening of the fishing head housing 2. A second bolt hole is provided at the free end of the hanging head body 10, corresponding to the first bolt hole. Mounting bolts 3 pass through the first and second bolt holes to secure the fishing head housing 2 to the hanging head 1. The mounting bolts 3 can easily pass through the first and second bolt holes, tightly securing the fishing head housing 2 to the hanging head 1, ensuring the assembly maintains stability and reliability during long-term use.

[0039] In a specific embodiment, the pressure cover 50 has a predetermined thickness, so that the pressure cover 50 itself has good rigidity.

[0040] In a specific embodiment, the mounting hole of the fishing head housing 2 is provided with an internal mounting thread, and the external mounting thread matches the external thread on the hanging head 1 , and the fishing head body is threadedly connected to the hanging head 1 .

[0041] In a specific embodiment, the gland 50 is a hollow cylindrical structure, and the cross-sectional area gradually decreases along the axial direction of the gland 50. The end of the gland 50 with a larger cross-sectional area abuts against the mounting opening inside the fishing head shell 2. The larger cross-sectional area can offset the abutting force and avoid stress concentration.

[0042] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A hanging head, characterized in that: include: Pendant head body, outer cover, wireless inner ring, grounding ring, coaxial cable and gland; One end of the hanging head body in the longitudinal direction is a hanging end, and the other end extends to a free end, the free end of the hanging head body is provided with an external thread, and the external thread is spaced a preset distance from the hanging end of the hanging head body; The wireless inner ring and the grounding ring are sleeved on the outside of the hanging head body, adjacent to the hanging end of the hanging head body, the coaxial cable is connected to the hanging end of the hanging head body, and extends along the outside of the hanging head body to the free end of the hanging head body, the outer sleeve is sleeved on the outside of the wireless inner ring, the grounding ring and the coaxial cable, and abuts against the hanging end of the hanging head body; The pressure cover is an annular structure with an internal thread on the inside, and the internal thread matches the external thread. The pressure cover is sleeved on the hanging head body and is bolted to the hanging head body, and the pressure cover abuts against the end of the outer sleeve away from the hanging end of the hanging head body.

2. The hanging head according to claim 1, characterized in that: The hanging head also includes: a common flat key; A first flat key groove is provided on the side wall of the hanging head body; A through second flat key groove is formed on the outer sleeve, and the second flat key groove corresponds to the first flat key groove; The common flat key matches the first flat key groove and the second flat key groove, and the common flat key is embedded in the first flat key groove and the second flat key groove.

3. The hanging head according to claim 1, characterized in that: A cable routing groove is provided on the side wall of the hanging head body along the length direction, and the cable routing groove extends to the free end of the hanging head body.

4. The hanging head according to claim 1, characterized in that: The hanging end of the hanging head body abuts against one end of the outer shell, and the hanging end of the hanging head body is bent toward the free end of the hanging head body to cover the end of the outer shell abutting against the hanging end.

5. The hanging head according to claim 4, characterized in that: The gland is a hollow cylindrical structure, and the cross-sectional area gradually decreases along the axial direction of the gland; The end of the gland with a smaller cross-sectional area has the same cross-sectional area as that of the outer sleeve, and the end of the gland with a smaller cross-sectional area abuts against the outer sleeve.

6. A detachable fishing head, according to any one of claims 1 to 5, characterized in that: include: Overshot head housing and mounting bolts; The fishing head shell is a hollow structure with two ends open, one end is a tapered opening, and the other end is a mounting opening, and a first bolt hole is provided in the fishing head shell adjacent to the mounting opening; The hanging head is installed inside the fishing head shell, and the hanging end of the hanging head abuts and seals against the tapered opening of the fishing head shell. A second bolt hole is formed at the free end of the hanging head body, and the second bolt hole corresponds to the first bolt hole. The mounting bolt passes through the first and second bolt holes to fix the fishing head shell and the hanging head.

7. The detachable fishing head according to claim 6, characterized in that: The gland has a preset thickness.

8. The detachable fishing head according to claim 7, characterized in that: The mounting hole of the fishing head housing is provided with an internal mounting thread, which matches the external mounting thread on the hanging head, and the fishing head body is threadedly connected to the hanging head.

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