Well drilling damping type cable connector

Abstract

The utility model discloses a well drilling damping type cable connector which comprises a first connector connected with a first cable and a second connector which is connected with a second cable and is the same as the first connector in structure. The second connector comprises a shell body of which the rear end is fixedly connected with the first connector, and an inner core which sleeves the front end of the shell body in a limiting manner; the inner core comprises an inner core body arranged at the front end of the shell body in a limiting and sleeving mode and a connecting semicircular part connected with the inner core body. And a plurality of connecting holes are formed in the connecting semicircular part. By means of the scheme, the shock absorption device has the advantages of being simple in structure, reliable in connection, full in shock absorption and the like, and has high practical value and popularization value in the technical field of well drilling.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a drilling shock-absorbing cable connector. Background Art

[0002] During the process of oil and gas drilling, drill pipes are lowered into the well in sections, and a cable for electrical connection is arranged inside the drill pipes, which is lowered into the well along with the drill pipe sections. Therefore, a cable connector needs to be arranged between adjacent drill pipes. At present, the cable connectors in the prior art adopt a plug-in method, which is prone to problems such as loosening during the drilling process. For example, in the Chinese invention patent with the patent publication number: CN102337844A and the name: Directional Drilling Signal Transmission Drill Pipe, it includes an outer pipe and a cable assembly erected inside the outer pipe by a positioning frame. Threaded connection structures that match each other are respectively arranged at both ends of the outer pipe. The cable assembly includes a cable connector and a cable connection seat respectively arranged at both ends of the outer pipe, a protective core pipe fixedly connected to the tails of the cable connector and the cable connection seat facing the inner side of the outer pipe respectively, and a central cable placed inside the protective core pipe. A spring connector is embedded in the front part of the cable connector, and a spring connection seat is embedded in the front part of the cable connection seat. A spring is fixedly installed on the spring connection seat. The spring is compressed and fixed between the spring connection seat and the spring connector when adjacent drill pipe units are connected. The spring connector and the spring connection seat are respectively electrically connected to the central cable, and matching connection structures are respectively arranged on the cable connector and the cable connection seat. Among them, the cable connection seat is as shown in the Chinese utility model with the patent publication number: CN202190049U and the name: Cable Connection Seat, and the cable connector is as shown in the Chinese utility model with the patent publication number: CN202227999U and the name: Cable Connector.

[0003] Therefore, there is an urgent need to propose a drilling shock-absorbing cable connector with a simple structure and reliable connection. Summary of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a drilling shock-absorbing cable connector. The technical scheme adopted by the utility model is as follows:

[0005] A drilling shock-absorbing cable connector connects a first cable and a second cable inside adjacent drill pipes, and includes a first connector connected to the first cable and a second connector connected to the second cable and having the same structure as the first connector. The second connector includes a housing body fixedly connected to the first connector at the rear end and an inner core sleeved on the front end of the housing body in a limited manner. The inner core includes an inner core body sleeved on the front end of the housing body in a limited manner and a connecting semi-circular part connected to the inner core body. A plurality of connecting holes are formed in the connecting semi-circular part.

[0006] Furthermore, an inner core installation cavity and a cable through-connection cavity which are connected to each other are formed in the housing body; a plurality of cable connection locking holes are formed in the peripheral edges of the cable through-connection cavity; a locking screw is arranged in each cable connection locking hole; the second cable is placed in the cable connection locking hole and locked by the locking screw.

[0007] Furthermore, several inner ring parts are arranged on the inner wall of the inner core installation cavity; several outer ring parts are arranged on the outer edge of the inner core body; the inner ring parts and the outer ring parts are arranged in an interlaced manner; the inner diameter of the inner ring part is smaller than the outer diameter of the outer ring part.

[0008] Furthermore, a positioning slot hole is formed through the connecting semi-circular part.

[0009] Furthermore, a first spacing space is arranged between the outer ring part and the inner ring part; filling rubber is arranged in the first spacing space.

[0010] Furthermore, a second spacing space is arranged between the front end of the housing body and the connecting semi-circular part; a shock-absorbing ring is arranged in the second spacing space.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) By arranging the first connection head and the second connection head with the same structure, the utility model does not need to separately mold the cable connection seat and the cable connection head, and can realize complete set processing, with low equipment input cost.

[0013] (2) By arranging the cable through-connection cavity and opening a plurality of cable connection locking holes, and using the locking screw for reliable connection, the installation efficiency is high. At the same time, by arranging the connecting semi-circular part and setting a connecting hole on the connecting semi-circular part, adjacent cable connection heads can be reliably connected through the screw, and the connection efficiency is high.

[0014] (3) By arranging the inner ring part and the outer ring part, and arranging filling rubber between the inner ring part and the outer ring part, and between the inner core body and the housing body, it can not only provide movable connection but also play a role in shock absorption; at the same time, a shock-absorbing ring is arranged between the front end of the housing body and the connecting semi-circular part, and the force on the housing is transmitted to the inner core through the shock-absorbing ring, which also has a shock-absorbing effect.

[0015] In summary, the utility model has the advantages of simple structure, reliable connection, sufficient shock absorption, etc., and has high practical value and popularization value in the field of drilling technology. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the protection scope. For those skilled in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0017] Figure 1 It is a structural schematic diagram of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the second connector of the present utility model.

[0019] Figure 3 It is a sectional schematic diagram of the second connector of the present utility model.

[0020] Figure 4 It is a structural schematic diagram of the inner core of the present utility model.

[0021] In the above attached drawings, the component names corresponding to the reference numerals are as follows:

[0022] 1. First cable; 2. Second cable; 3. First connector; 4. Second connector; 41. Outer shell body; 42. Inner core; 411. Cable through connection cavity; 412. Cable connection locking hole; 413. Inner core installation cavity; 414. Inner ring part; 421. Inner core body; 422. Outer ring part; 423. Connecting semi-circular part; 424. Connecting hole; 425. Positioning groove hole; 431. First interval space; 432. Second interval space. Specific embodiments

[0023] To make the objectives, technical solutions and advantages of the present application clearer, the following further illustrates the present utility model with reference to the attached drawings and embodiments. The implementation manners of the present utility model include but are not limited to the following embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0024] Embodiment

[0025] In this embodiment, the term "and / or" only describes the associated relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone.

[0026] In the description of the specification and claims of this embodiment, terms such as "first" and "second" are used to distinguish different objects, rather than to describe a specific order of the objects. For example, the first target object and the second target object are used to distinguish different target objects, rather than to describe a specific order of the target objects.

[0027] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0028] In the description of the embodiments of this application, unless otherwise specified, the meaning of "a plurality of" refers to two or more. For example, a plurality of processing units refers to two or more processing units; a plurality of systems refers to two or more systems.

[0029] As Figures 1 to 4 shown, this embodiment provides a drilling shock-absorbing cable connector, which is used to connect the first cable 1 and the second cable 2 in adjacent drill pipes. In this embodiment, the drilling shock-absorbing cable connector includes a first connector 3 and a second connector 4 with the same structure. Among them, the first connector 3 is connected to the first cable 1, and the second connector 4 is connected to the second cable 2.

[0030] In this embodiment, the second connector 4 includes a housing body 41 whose rear end is fixedly connected to the first connector 3, and a core 42 sleeved on the front end of the housing body 41 in a limited manner. Among them, an inner core installation cavity 413 and a cable through-connection cavity 411 that are connected to each other are formed in the housing body 41. A plurality of cable connection locking holes 412 are formed on the four peripheral edges of the cable through-connection cavity 411, and several inner ring parts 414 are arranged on the inner wall of the inner core installation cavity 413. A locking screw is arranged in the cable connection locking hole 412, and the second cable 2 is placed in the cable connection locking hole 412 and locked by the locking screw.

[0031] In addition, the core 42 includes a core body 421 sleeved on the front end of the housing body 41 in a limited manner, and a connecting semi-circular part 423 connected to the core body 421. Among them, several outer ring parts 422 are arranged on the outer side edge of the core body 421. The inner ring part 414 and the outer ring part 422 are arranged in an interspersed manner, and the inner diameter of the inner ring part 414 is smaller than the outer diameter of the outer ring part 422.

[0032] In this embodiment, several connecting holes 424 are formed in the connecting semi-circular portion 423, and a positioning slot hole 425 is penetratingly provided in the connecting semi-circular portion 423. Among them, positioning is carried out by using the positioning slot hole 425, and a rectangular positioning block can be arranged in the positioning slot hole 425.

[0033] In this embodiment, in order to achieve shock-absorbing connection, a first spacer space 431 is provided between the outer ring portion 422 and the inner ring portion 414, and filling rubber is provided in the first spacer space 431. In addition, a second spacer space 432 is provided between the front end of the housing body 41 and the connecting semi-circular portion 423, and a shock-absorbing ring is provided in the second spacer space 432. In this embodiment, the first connector 3 is connected to the first cable 1, and the second connector 4 is connected to the second cable 2, and then glue is poured to obtain the filling rubber.

[0034] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention. Any changes made by adopting the design principle of the present invention and non-creative labor on this basis shall fall within the protection scope of the present invention.

Claims

1. A drilling shock-absorbing cable connector, connecting a first cable (1) and a second cable (2) in adjacent drill pipes, characterized in that: The invention comprises a first connector (3) connected to a first cable (1), and a second connector (4) connected to a second cable (2) and having the same structure as the first connector (3); the second connector (4) comprises an outer shell body (41) whose rear end is fixedly connected to the first connector (3), and an inner core (42) which is limitedly sleeved at the front end of the outer shell body (41); the inner core (42) comprises an inner core body (421) which is limitedly sleeved at the front end of the outer shell body (41), and a connecting semicircular portion (423) connected to the inner core body (421); a plurality of connecting holes (424) are provided on the connecting semicircular portion (423); the second cable (2) is inserted into the outer shell body (41) and extends into the inner core body (421).

2. A drilling shock-absorbing cable connector according to claim 1, characterized in that: The shell body (41) is provided with an inner core installation cavity (413) and a cable through-connection cavity (411) which are connected to each other; a plurality of cable connection locking holes (412) are provided around the edges of the cable through-connection cavity (411); a locking screw is provided in the cable connection locking hole (412); the second cable (2) is placed in the cable connection locking hole (412) and is locked by the locking screw.

3. A drilling shock-absorbing cable connector according to claim 2, characterized in that: The inner wall of the inner core installation cavity (413) is provided with several circles of inner ring parts (414); the outer edge of the inner core body (421) is provided with several circles of outer ring parts (422); the inner ring parts (414) and the outer ring parts (422) are arranged in an interlaced manner; the inner diameter of the inner ring part (414) is smaller than the outer diameter of the outer ring part (422).

4. A drilling shock-absorbing cable connector according to claim 1, 2 or 3, characterized in that: The connecting semicircular portion (423) is penetrated by a positioning slot hole (425).

5. A drilling shock-absorbing cable connector according to claim 3, characterized in that: A first spacing space (431) is provided between the outer ring portion (422) and the inner ring portion (414); and a filling rubber is provided in the first spacing space (431).

6. A drilling shock-absorbing cable connector according to claim 3, characterized in that: The outside A second spacing space (432) is provided between the front end of the shell body (41) and the connecting semicircular portion (423); A shock-absorbing ring is arranged in the second spacing space (432).

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