A sealed insulation structure for underground high current male connector

Abstract

The present invention discloses a sealed insulating structure for a downhole high-current male connector, comprising an insulating body (9); the insulating body (9) is a cylindrical structure; the top of the insulating body (9) is connected to an instrument body (13); the insulating body (9) is provided with a guide head (1), an insulating tube and a live ring arranged at intervals from bottom to top; a group of wires and reinforcing rods (4) are provided inside the insulating body (9); the wires are connected to the corresponding live rings; a locking block (11) is provided on the top of the wires and the reinforcing rods (4), and the locking block (11) is locked and connected to the insulating body (9) via screws (12). The present invention arranges three large-diameter wires inside a small-diameter male connector, thereby achieving the sealed insulation requirements for high-current power supply. The reinforcing rods are used to improve the high strength and rigidity of the overall structure. The operability and reliability of the entire structure are improved. The insulation between the live ring and the metal parts, and between the copper core and the metal parts is guaranteed.

Description

Technical Field

[0001] The invention relates to a sealed insulating structure for an underground high-current male connector, belonging to the technical field of underground instrument structures. Background Art

[0002] In the fields of oil and gas field or coal mine exploration, geothermal logging, and marine surveys, downhole wet docking and other processes are often used to power downhole instruments for operations such as logging, perforating, and coring. Downhole live wet joints need to solve the problems of reliable power supply and long-term sealing and insulation. The existing multi-core wet joints are relatively complex in structure and unsatisfactory in reliability due to the limitations of various factors such as the outer diameter of the instrument and the outer diameter of the wire. Therefore, the existing technology still has shortcomings and needs further improvement. Summary of the invention

[0003] The object of the present invention is to provide a sealed insulating structure for an underground high-current male connector to achieve reliable high-current power supply between multiple groups of large-diameter wires and charged rings, thereby overcoming the shortcomings of the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] The invention discloses a sealed insulating structure for an underground high-current male connector, comprising an insulating body; the insulating body is a cylindrical structure; the top of the insulating body is connected to an instrument body; the insulating body is provided with a guide head, an A insulating tube, an A charged ring, a B insulating tube, a B charged ring, a C insulating tube and a C charged ring in sequence from bottom to top; an A wire, a B wire, a C wire and a reinforcing rod are arranged in the insulating body; the lower end of the A wire is connected to the A charged ring, the lower end of the B wire is connected to the B charged ring; the lower end of the C wire is connected to the C charged ring; a locking block is arranged on the top of the A wire, the B wire, the C wire and the reinforcing rod, and the locking block is locked and connected to the insulating body via a screw.

[0006] In the aforementioned sealed insulating structure for underground high current male connector, the lower part of the guide head is a cone, and the cone head is a spherical structure; the upper part of the guide head is a cylindrical structure, the top surface of the cylinder is provided with an eccentric blind hole, the bottom of the eccentric blind hole is provided with a threaded hole, the side wall of the blind hole is provided with a group of sealing grooves, and a sealing ring is provided in the sealing groove.

[0007] In the aforementioned sealed insulating structure for underground high current male connector, both ends of the reinforcing rod are processed with external threads; the external thread at the upper end of the reinforcing rod is connected to the internal thread on the locking block; the external thread at the lower end of the reinforcing rod is connected to the threaded hole on the guide head.

[0008] In the aforementioned sealed insulation structure for downhole high current male connector, a boss is provided on the upper part of the insulating body, an external thread is processed above the boss, and the external thread on the boss is connected to the internal thread on the instrument body; a sealing ring is provided at the connection between the instrument body and the insulating body; and motor oil is poured into the inner hole of the instrument body.

[0009] In the aforementioned sealed insulating structure for underground high-current male connector, rectangular grooves or rectangular keys are provided at the bottom of the instrument body, the insulating body, A insulating tube, A charged ring, B insulating tube, B charged ring, C insulating tube and both ends of C charged ring, as well as the top of the guide head; the instrument body, insulating body, A insulating tube, A charged ring, B insulating tube, B charged ring, C insulating tube, C charged ring and guide head are connected in sequence to prevent rotation via rectangular grooves or rectangular keys.

[0010] In the sealed insulation structure for the underground high current male connector, a group of sealing grooves are provided at the connection between the A insulating tube, A charged ring, B insulating tube, B charged ring, C insulating tube and C charged ring and the insulating body, and a sealing ring is provided in the sealing groove.

[0011] In the aforementioned sealed insulating structure for underground high-current male connector, a group of screw holes are provided on the A live ring, and conductive screws are provided in the screw holes. The A live ring is electrically connected to the threaded holes on the copper core of the A conductor via the conductive screws; a group of screw holes are provided on the B live ring, and conductive screws are provided in the screw holes. The B live ring is electrically connected to the threaded holes on the copper core of the B conductor via the conductive screws; a group of screw holes are provided on the C live ring, and conductive screws are provided in the screw holes. The C live ring is electrically connected to the threaded holes on the copper core of the C conductor via the conductive screws.

[0012] In the aforementioned sealed insulation structure for underground high-current male connector, insulating glue is poured between the A wire, the B wire and the C wire and the threading holes of the insulating body.

[0013] In the aforementioned sealed insulation structure for underground high current male connector, the A wire, B wire and C wire are arranged in an isosceles triangle parallel to the center line of the insulation body; the reinforcing rod is arranged opposite to the B wire and parallel to the center line of the insulation body.

[0014] Due to the adoption of the above-mentioned technical scheme, the present invention arranges three large-diameter wires inside the small-diameter male connector, and cooperates with other structures to ensure the sealing and insulation requirements of large current power supply. A reinforcing rod is eccentrically arranged inside the small-diameter male connector to ensure the high strength and rigidity of the overall structure. Although the use of multiple eccentric structures increases the difficulty of processing to a certain extent, it simplifies the entire sealed insulation structure and improves the installation operability and reliability of the entire structure. The three insulating tubes and the insulating body are made of high-strength non-metallic insulating materials to ensure the sealing strength of the thin walls of the entire structure. The three insulating tubes and the insulating body are made of high-strength non-metallic insulating materials to ensure the insulation between the charged ring and the metal parts, and between the copper core and the metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 yes Figure 1 Middle AA section;

[0017] Figure 3 yes Figure 1 Middle BB section;

[0018] Figure 4 yes Figure 1 Middle CC section;

[0019] Figure 5 It is a schematic diagram of the appearance of the present invention.

[0020] The markings in the accompanying drawings are: 1-guide head, 2-motor oil, 3.1-A insulating tube, 3.2-B insulating tube, 3.3-C insulating tube, 4-reinforcement rod, 5.1-A charged ring, 5.2-B charged ring, 5.3-C charged ring, 6-conductive screw, 7-sealing ring, 8.1-A wire, 8.2-B wire, 8.3-C wire, 9-insulating body, 10-boss, 11-locking block, 12-screw, 13-instrument body, 14-insulating glue, 15-rectangular key connected with rectangular groove. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] The present invention provides a sealed insulating structure for a downhole high current male connector, such as Figures 1 to 5As shown, it includes an insulating body 9; the insulating body 9 is a cylindrical structure; the top of the insulating body 9 is connected to the instrument body 13; the insulating body 9 is provided with a guide head 1, an A insulating tube 3.1, an A charged ring 5.1, a B insulating tube 3.2, a B charged ring 5.2, a C insulating tube 3.3 and a C charged ring 5.3 in sequence from bottom to top; the insulating body 9 is provided with an A wire 8.1, a B wire 8.2, a C wire 8.3 and a reinforcing rod 4; the lower end of the A wire 8.1 is connected to the A charged ring 5.1, the lower end of the B wire 8.2 is connected to the B charged ring 5.2; the lower end of the C wire 8.3 is connected to the C charged ring 5.3; the tops of the A wire 8.1, the B wire 8.2, the C wire 8.3 and the reinforcing rod 4 are provided with a locking block 11, and the locking block 11 is locked and connected to the insulating body 9 through a screw 12. The lower part of the guide head 1 is a cone, and the cone head is a spherical structure; the upper part of the guide head 1 is a cylindrical structure, and an eccentric blind hole is provided on the top surface of the cylinder, and a threaded hole is provided at the bottom of the eccentric blind hole, and a group of sealing grooves are provided on the side wall of the blind hole, and a sealing ring 7 is provided in the sealing groove. Both ends of the reinforcing rod 4 are processed with external threads; the external thread on the upper end of the reinforcing rod 4 is connected with the internal thread on the locking block 11; the external thread on the lower end of the reinforcing rod 4 is connected with the threaded hole on the guide head 1. A boss 10 is provided on the upper part of the insulating body 9, and an external thread is processed above the boss 10, and the external thread on the boss 10 is connected with the internal thread on the instrument body 13; a sealing ring 7 is provided at the connection between the instrument body 13 and the insulating body 9; the inner hole of the instrument body 13 is filled with motor oil 2. A rectangular groove or rectangular key 15 is provided at the bottom of the instrument body 13, the insulating body 9, the A insulating tube 3.1, the A live ring 5.1, the B insulating tube 3.2, the B live ring 5.2, the C insulating tube 3.3 and the C live ring 5.3, and the top of the guide head 1; the instrument body 13, the insulating body 9, the A insulating tube 3.1, the A live ring 5.1, the B insulating tube 3.2, the B live ring 5.2, the C insulating tube 3.3, the C live ring 5.3 and the guide head 1 are sequentially anti-rotationally connected via the rectangular groove or rectangular key 15. A set of sealing grooves are provided at the connection between the A insulating tube 3.1, the A live ring 5.1, the B insulating tube 3.2, the B live ring 5.2, the C insulating tube 3.3 and the C live ring 5.3 and the insulating body 9, and a sealing ring 7 is provided in the sealing groove. A live ring 5.1 is provided with a group of screw holes, in which conductive screws 6 are provided, and A live ring 5.1 is electrically connected to the threaded holes on the copper core of A conductor 8.1 via the conductive screws 6; B live ring 5.2 is provided with a group of screw holes, in which conductive screws 6 are provided, and B live ring 5.2 is electrically connected to the threaded holes on the copper core of B conductor 8.2 via the conductive screws 6; C live ring 5.3 is provided with a group of screw holes, in which conductive screws 6 are provided, and C live ring 5.3 is electrically connected to the threaded holes on the copper core of C conductor 8.3 via the conductive screws 6. Insulating glue 14 is poured between A conductor 8.1, B conductor 8.2 and C conductor 8.3 and the threading holes of the insulating body 9.The A conductor 8.1, the B conductor 8.2 and the C conductor 8.3 are arranged in an isosceles triangle and parallel to the center line of the insulating body 9; the reinforcing rod 4 is arranged opposite to the B conductor 8.2 and parallel to the center line of the insulating body 9. Example

[0023] This example Figures 1 to 5 As shown, the present invention is described in detail by taking a sealed insulating structure for a high current male connector connecting three wires as an example.

[0024] The structure of this example is subjected to a large external pressure exerted by the well fluid; the structural space is less than 28 mm; the insulating body 9 is provided with three charged rings and three insulators arranged in an alternating manner in the axial direction; the diameter of a single wire is about 6 mm, which is a relatively thick wire, and the current passing through the wire is very large;

[0025] The outer side of the insulating body 9 is distributed from bottom to top with a guide head 1, three insulating tubes 3 and three charged rings 5. The inner holes of the above parts are processed with multiple groups of grooves to prevent rotation between each other, and the sealing of the whole structure and the insulation between the charged rings are ensured by sealing rings; the insulating tube 3 and the insulating body 9 are processed with high-strength non-metallic insulating materials.

[0026] Three deep holes of different depths are eccentrically arranged in the upper half of the interior of the insulating body 9, which are used to connect the copper core of the conductor with the insulation skin partially stripped to the corresponding live ring; the stripping position of the conductor at the top side of the insulating body 9 is filled with insulating glue 14, which improves the insulation between the copper core of the conductor and the locking block 11;

[0027] Three groups of six small holes are opened at the corresponding positions of the insulating body 9 and the charged ring; the conductive screw 6 passes through the insulating body 9 and is threadedly connected with the copper core of the wire to achieve conduction between the copper core of the wire and the charged ring; a sealing ring 7 is sleeved on the conductive screw 6 to ensure sealing; the sealing ring 7 can be an O-ring;

[0028] A threaded hole is eccentrically arranged in the lower half of the interior of the insulating body 9 for installing the reinforcing rod 4; the upper and lower ends of the reinforcing rod 4 are respectively connected to the guide head 1 and the locking block 11 by threads to axially lock the entire structural member; in order to prevent the thread from loosening, the locking block 11 is fixed to the insulating body 9 by screws 12;

[0029] The entire structure is filled with motor oil to further improve internal insulation;

[0030] In the present invention, when the outer diameter is very small, the entire structure adopts a multiple eccentric structure to achieve the setting function while ensuring the strength and rigidity of the parts.

[0031] The installation process of the entire structure is as follows:

[0032] 1. Install the O-ring on the sealing ring 7 parts;

[0033] 2. Press Figure 1 As shown in the positional relationship, three charged rings, three insulating tubes and a guide head 1 are put on the insulating body 9 from top to bottom;

[0034] 3. After connecting the reinforcing rod 4 to the guide head 1, tighten the locking block 11 and the screw 12;

[0035] 4. Strip the insulation skin of the three wires to the corresponding length, and insert them into the corresponding positions from the upper end of the insulation body 9 in turn; fill the mouth with insulation glue 14;

[0036] 5. The conductive screw 6 passes through the insulating body 9 and is threadedly connected to the copper core of the conductor;

[0037] 6. The whole is then threadedly connected to the instrument body 13.

[0038] The invention is suitable for the sealed insulating structure of underground high-current male connectors, and is particularly suitable for related structures that use underground wet docking and other processes to supply power to underground instruments, and belongs to the technical field of underground instrument structures.

Claims

1. A sealed insulating structure for an underground high current male connector, comprising an insulating body (9); characterized in that: The insulating body (9) is a cylindrical structure; the top of the insulating body (9) is connected to the instrument body (13); the insulating body (9) is provided with a guide head (1), an A insulating tube (3.1), an A charged ring (5.1), a B insulating tube (3.2), a B charged ring (5.2), a C insulating tube (3.3) and a C charged ring (5.3) from bottom to top; the insulating body (9) is provided with an A wire (8.1), a B wire (8.2), a C wire (8.1), and a .3) and a reinforcing rod (4); the lower end of the A conductor (8.1) is connected to the A live ring (5.1), the lower end of the B conductor (8.2) is connected to the B live ring (5.2); the lower end of the C conductor (8.3) is connected to the C live ring (5.3); a locking block (11) is provided at the top of the A conductor (8.1), the B conductor (8.2), the C conductor (8.3) and the reinforcing rod (4), and the locking block (11) is locked and connected to the insulating body (9) via a screw (12).

2. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: The lower part of the guide head (1) is a cone, and the cone head is a spherical structure; the upper part of the guide head (1) is a cylindrical structure, the top surface of the cylinder is provided with an eccentric blind hole, the bottom of the eccentric blind hole is provided with a threaded hole, the side wall of the blind hole is provided with a group of sealing grooves, and the sealing grooves are provided with sealing rings (7).

3. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: Both ends of the reinforcing rod (4) are processed with external threads; the external threads at the upper end of the reinforcing rod (4) are connected to the internal threads on the locking block (11); and the external threads at the lower end of the reinforcing rod (4) are connected to the threaded hole on the guide head (1).

4. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: The insulating body (9) is provided with a boss (10) on the upper part, and an external thread is processed on the upper part of the boss (10), and the external thread on the boss (10) is connected to the internal thread on the instrument body (13); a sealing ring (7) is provided at the connection between the instrument body (13) and the insulating body (9); and motor oil (2) is poured into the inner hole of the instrument body (13).

5. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: The bottom end of the instrument body (13), the insulating body (9), the A insulating tube (3.1), the A charged ring (5.1), the B insulating tube (3.2), the B charged ring (5.2), the C insulating tube (3.3) and the two ends of the C charged ring (5.3), as well as the top end of the guide head (1) are all provided with rectangular grooves or rectangular keys (15); the instrument body (13), the insulating body (9), the A insulating tube (3.1), the A charged ring (5.1), the B insulating tube (3.2), the B charged ring (5.2), the C insulating tube (3.3), the C charged ring (5.3) and the guide head (1) are sequentially connected to prevent rotation via the rectangular grooves or rectangular keys (15).

6. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: A group of sealing grooves are provided at the connection points between the A insulating tube (3.1), the A charged ring (5.1), the B insulating tube (3.2), the B charged ring (5.2), the C insulating tube (3.3) and the C charged ring (5.3) and the insulating body (9), and a sealing ring (7) is provided in the sealing groove.

7. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: The A live ring (5.1) is provided with a group of screw holes, in which conductive screws (6) are arranged, and the A live ring (5.1) is electrically connected to the threaded holes on the copper core of the A wire (8.1) via the conductive screws (6); the B live ring (5.2) is provided with a group of screw holes, in which conductive screws (6) are arranged, and the B live ring (5.2) is electrically connected to the threaded holes on the copper core of the B wire (8.2) via the conductive screws (6); the C live ring (5.3) is provided with a group of screw holes, in which conductive screws (6) are arranged, and the C live ring (5.3) is electrically connected to the threaded holes on the copper core of the C wire (8.3) via the conductive screws (6).

8. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: Insulating glue (14) is injected between the A wire (8.1), the B wire (8.2) and the C wire (8.3) and the threading holes of the insulating body (9).

9. The sealed insulating structure for underground high current male connector according to claim 1, characterized in that: The A conductor (8.1), the B conductor (8.2) and the C conductor (8.3) are arranged in an isosceles triangle and parallel to the center line of the insulating body (9); the reinforcing rod (4) is arranged opposite to the B conductor (8.2) and parallel to the center line of the insulating body (9).

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