Sealed outlet box for electromagnet outgoing line of deepwater Christmas tree

Abstract

The utility model discloses a deepwater Christmas tree electromagnet leading-out wire sealing outlet box which comprises a shell and a wiring terminal arranged in the shell, the wiring terminal and the shell are sealed, an insulator is arranged between the wiring terminal and the shell, and the insulator is connected with the shell. Sealing elements are arranged between the insulator and the wiring terminal and between the insulator and the shell respectively, the wire connected to the wiring terminal penetrates through the insulator and the sealing elements, the sealing elements are designed in a sectional mode, the physical characteristics of the flexible plastic sealing elements are utilized, and the surface of the wire harness is sealed under secondary superposition extrusion. Water leakage and short circuit in the high-pressure environment are prevented, the metal locking ring is in threaded connection with the shell, high water pressure can be effectively borne, and the sealing piece is prevented from losing efficacy in the high-water-pressure environment.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically to a sealed lead wire box for the electromagnet lead wire of a deep-water oil well. Background Technology

[0002] In existing technologies, such as Figure 1 As shown, it generally consists of a junction box, terminals, wires, insulating tubing, and heat shrink tubing. The structural parts are assembled into a junction box assembly, and the wires are sealed with adhesive heat shrink tubing after being led out. This structure can only be used in normal environments, and the protection level can only reach IP65. It is suitable for electrical connections of non-water-contaminated control valve assemblies. However, in deep water environments, due to the difference in hydraulic pressure, the requirements for the waterproof sealing performance of the connector are particularly high, and the existing structure cannot meet the technical requirements. Therefore, the existing structure cannot work in a 1500-meter deep water environment. Utility Model Content

[0003] The purpose of this invention is to improve the structure of the sealed box so that wires can be led out in deep water environments.

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

[0005] A sealed lead wire box for a deepwater production tree electromagnet includes a housing and terminals disposed within the housing. The terminals are sealed to the housing, and an insulator is disposed between the terminals and the housing. Sealing elements are disposed between the insulator and the terminals, and between the insulator and the housing. The wires connected to the terminals pass through the insulator and the sealing elements.

[0006] In the above technical solution, the insulator includes a first insulator and a second insulator, and the terminal is sandwiched between the first insulator and the second insulator.

[0007] In the above technical solution, the sealing element includes a sealing ring, and a sealing ring is respectively provided between the terminal and the first insulator and the second insulator, and the sealing ring is sleeved on the terminal.

[0008] In the above technical solution, the housing is connected to a locking ring by a thread, and the sealing element is disposed between the locking ring and the insulator.

[0009] In the above technical solution, the sealing element includes a first sealing element and a second sealing element, and the locking ring includes a first locking ring and a second locking ring. The first sealing element is disposed between the first locking ring and the insulator, and the second sealing element is disposed between the first locking ring and the second locking ring.

[0010] The second locking ring and the second sealing element are provided with a pressing plate.

[0011] The first sealing element is in T-shaped structure, and the first locking ring is threadedly connected with the shell after being sleeved on the first sealing element.

[0012] The emergence end of the terminal is arranged in the first sealing element, and the wire is sequentially connected with the terminal through the second locking ring, the pressing plate, the second sealing element and the first sealing element.

[0013] In summary, due to the adoption of the above technical scheme, the beneficial effects of the utility model are:

[0014] Through the sectional design of the sealing element, the physical properties of the flexible plastic sealing element are utilized to realize the sealing of the surface of the wire harness under secondary superimposed extrusion, prevent water leakage and short circuit in high pressure environment, and the metal locking ring is threadedly connected with the shell, so that the high water pressure can be effectively borne, and the sealing element can be prevented from being invalid in the high water pressure environment. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be explained through examples and with reference to the drawings, wherein:

[0016] Figure 1 is a structural schematic view of prior art;

[0017] Figure 2 is a structural schematic view of the embodiment;

[0018] Among them: 1 is the lead-out wire, 2 is the terminal, 3 is the lead-in wire, 4 is the first insulator, 5 is the sealing ring, 6 is the second insulator, 7 is the first sealing element, 8 is the first locking ring, 9 is the second sealing element, 10 is the pressing plate, 11 is the second locking element. DETAILED DESCRIPTION

[0019] All features disclosed in this specification, or all steps of any methods or processes disclosed in this specification, can be combined in any manner, except where features or steps are mutually exclusive.

[0020] Any feature disclosed in this specification, unless stated otherwise, can be replaced by any equivalent or similar feature, or any feature with the same purpose. That is, unless stated otherwise, each feature is one example only of a number of equivalent or similar features.

[0021] As Figure 1 shown, it is the structure of prior art, as Figure 2 shown, in Figure 1On the basis of the prior art, a pipe structure is added to the shell corresponding to the terminal 2, the pipe structure is an integral structure with the shell, and an internal thread is arranged in the pipe structure for connection.

[0022] The terminal 2 is made of metal material, one end of the terminal 2 in the shell is connected with the incoming line 3, and one end of the terminal 2 at the outer end of the shell is connected with the outgoing line 1. Insulators need to be arranged at both ends of the terminal 2 for isolating the terminal 2 and the shell to avoid short circuit. The insulators include a first insulator 4 and a second insulator 6. In order to ensure the sealing between the terminal 2 and the insulators, a sealing ring 5 is sleeved on the terminal 2, and a sealing ring 5 is sleeved between the terminal 2 and the first insulator 4 and the second insulator 6 respectively. The first insulator 4 and the second insulator 6 are pressed against each other to press the sealing ring 5 against the terminal 2, thereby realizing the sealing of both ends of the terminal 2.

[0023] A first sealing member 7 is arranged above the terminal 2, the first sealing member 7 is pressed above the second insulator 6, the first sealing member 7 is made of flexible rubber, the entire first sealing member 7 is designed in a T-shaped structure, an end of the first sealing member 7 is sleeved with a first locking ring 8, an outer surface of the first locking ring 8 is provided with an external thread, the external thread can be connected with an internal thread in the pipe structure of the shell, the first locking ring 8 is pressed against the first sealing member 7 through the threaded connection, the first sealing member 7 is deformed, and the first sealing member 7 is completely filled between the surface of the outgoing line 1 and the shell.

[0024] A second sealing member 9 is arranged above the first locking ring 8, the second sealing member 9 is made of flexible rubber like the first sealing member and can be deformed. A pressing plate 10 is arranged above the second sealing member 9, the pressing plate 10 is provided with a through hole through which the outgoing line 1 can pass. A second locking ring 11 is arranged above the pressing plate 10, an outer surface of the second locking ring 11 is provided with an external thread, the external thread can be connected with an internal thread in the pipe structure of the shell, the second locking ring 11 is pressed against the pressing plate 10 through the threaded connection, and the second sealing member 9 is deformed and filled between the outgoing line 1 and the shell, thereby realizing the sealing.

[0025] The first locking ring 8, the second locking ring 11 and the pressing plate 10 in the embodiment are all metal structures, and form a closed metal shell after being connected with the shell. The metal structure has the compression resistance, and can resist the high water pressure in the external environment, thereby realizing the sealing performance of the terminal and the inside and outside.

[0026] The utility model is not limited to the foregoing specific embodiments. The utility model extends to any new feature or any new combination disclosed in the specification, and any new method or process step or any new combination disclosed.

Claims

1. A sealed lead-out box for an electromagnet in deepwater production trees, comprising a housing and terminals disposed within the housing, wherein the terminals are sealed to the housing, characterized in that: An insulator is provided between the terminal block and the housing, and a seal is provided between the insulator and the terminal block, and between the insulator and the housing, respectively. The wire connected to the terminal block passes through the insulator and the seal.

2. The sealed lead-out box for the electromagnet lead wire of a deepwater oil wellhead as described in claim 1, characterized in that: The insulator includes a first insulator and a second insulator, and the terminal is clamped between the first insulator and the second insulator.

3. A sealed lead-out box for the electromagnet lead wire of a deepwater oil wellhead as described in claim 2, characterized in that: The sealing element includes a sealing ring, and a sealing ring is respectively provided between the terminal and the first insulator and the second insulator, and the sealing ring is fitted onto the terminal.

4. The sealed lead-out box for the electromagnet lead wire of a deepwater oil wellhead as described in claim 1, characterized in that: The housing is connected to a locking ring via a thread, and the sealing element is disposed between the locking ring and the insulator.

5. A sealed lead-out box for the electromagnet lead wire of a deepwater oil wellhead as described in claim 4, characterized in that: The sealing element includes a first sealing element and a second sealing element, and the locking ring includes a first locking ring and a second locking ring. The first sealing element is disposed between the first locking ring and the insulator, and the second sealing element is disposed between the first locking ring and the second locking ring.

6. A sealed lead-out box for the electromagnet lead wire of a deepwater oil wellhead as described in claim 5, characterized in that: A pressure plate is provided between the second locking ring and the second seal, and the wire passes through the pressure plate.

7. A sealed lead-out box for the electromagnet lead wire of a deepwater oil wellhead as described in claim 5, characterized in that: The first sealing element has a T-shaped structure, and the first locking ring is threaded onto the first sealing element and then connected to the housing.

8. A sealed lead-out box for the electromagnet lead wire of a deepwater oil wellhead as described in claim 5, characterized in that: The terminal block is located inside the first seal, and the wire passes through the second locking ring, pressure plate, second seal, and first seal in sequence to connect to the terminal block.

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