A pressure-bearing base with a multi-core optical fiber and electrical plug assembly mechanism

Abstract

This invention provides a pressure-bearing base with a multi-core optical fiber and electrical plug assembly mechanism. It includes a pressure-bearing base that is movably and sealed within a housing. The pressure-bearing base has multiple axially penetrating cable and optical fiber through holes. Cable sockets and optical fiber sockets are respectively installed in the cable and optical fiber through holes. The cable socket includes a cable plug with terminals at both ends, which is directly inserted into the cable through hole. The optical fiber socket includes a left optical fiber connector and a right optical fiber connector, respectively inserted into both ends of the optical fiber through hole, and the two are connected via a power connector. This invention can simultaneously provide the transmission of electrical and optical fiber signals through a single pressure-bearing base, providing signal transmission for multiple connected measuring instruments, and also offering more signal transmission options for the same measuring instrument. It also reduces the internal wiring layout of the measuring instrument, thus lowering costs.

Description

Technical Field

[0001] This utility model relates to the field of petroleum exploration, and in particular to a pressure-bearing base that simultaneously incorporates a multi-core optical fiber and an electrical plug assembly mechanism. Background Technology

[0002] In the process of oil exploration, it is necessary to lower measuring equipment with different research functions down into the well to measure information such as the fluid, geology and well diameter. The environment down into the well is complex and the pressure varies at different depths. The measuring equipment not only needs to be resistant to high temperatures, but also needs to prevent the fluid from downhole from seeping into the equipment and affecting the measurement results.

[0003] Current measuring equipment is equipped with a pressure-bearing connector that can transmit fiber optic signals. This can isolate the channel between the measuring section and the analysis section of the equipment while transmitting fiber optic signals, preventing downhole fluid from entering the analysis section and affecting the measurement results.

[0004] However, with the development of measuring equipment, the original single fiber optic signal transmission method can no longer meet the signal transmission requirements of multiple and different types of measuring equipment. This is because the current method can now connect multiple measuring devices in series and conduct measurements simultaneously. Utility Model Content

[0005] The purpose of this invention is to provide a pressure-bearing base that simultaneously incorporates a multi-core optical fiber and an electrical plug assembly mechanism.

[0006] Specifically, this utility model provides a pressure-bearing base that simultaneously incorporates a multi-core optical fiber and an electrical plug assembly mechanism. It includes a pressure-bearing base that is movably and sealed within a housing. The pressure-bearing base has multiple axially penetrating cable through-holes and optical fiber through-holes. Cable sockets and optical fiber sockets are respectively installed within the cable through-holes and optical fiber through-holes.

[0007] The cable socket includes a cable plug with terminals at both ends, which is directly inserted into the cable through hole;

[0008] The fiber optic socket includes a left fiber optic connector and a right fiber optic connector, which are respectively inserted into both ends of the fiber optic through-hole and are connected by a power connector.

[0009] In one embodiment, five cable through holes and four optical fiber through holes are provided, and the cable through holes and the optical fiber through holes are symmetrically distributed on the axial section of the pressure bearing seat.

[0010] In one embodiment, the energy connector includes a left collimating lens and a right collimating lens that respectively contact the left fiber optic connector and the right fiber optic connector, and a sapphire glass sandwiched between the left collimating lens and the right collimating lens.

[0011] In one embodiment, the fiber optic through-hole is fitted with a locking ring at the insertion point of the right fiber optic connector.

[0012] In one embodiment, the cable socket and the fiber optic socket are contacted and limited by an annular retaining ring on their outer surfaces and an annular boss inside the cable through hole and the fiber optic through hole.

[0013] In one embodiment, the outer surfaces of the cable socket and the fiber optic socket are respectively provided with sealing rings that contact the inner surfaces of the cable through hole and the fiber optic through hole.

[0014] In one embodiment, the cable socket is a single-core cable socket, with each end of the terminal block connected to a single-wire cable.

[0015] In one embodiment, the cable socket is a multi-core input / output structure, including a multi-core plug socket with multiple pins at both ends, a limiting ring that fixes the multi-core plug socket in the cable through hole, a plug housing that fits around the pins, and a bottom cover and an outer cover installed at the openings at both ends of the plug housing, with holes in the bottom cover and the outer cover corresponding to the pins.

[0016] In one embodiment, there is one cable through-hole and four optical fiber through-holes arranged around the cable through-hole.

[0017] In one embodiment, a limiting step protruding in the axial direction is provided inside the housing, the insertion end of the pressure bearing seat is blocked by the limiting step, and the inserted pressure bearing seat is fixed inside the housing by a locking ring.

[0018] This invention can simultaneously provide the transmission of electrical and fiber optic signals through a single pressure-bearing base, enabling signal transmission for multiple connected measuring instruments. It can also provide more signal transmission options for the same measuring instrument, while reducing the internal wiring layout of the measuring instrument and lowering costs. Furthermore, the pressure-bearing base itself can isolate the liquid permeability between instruments under high downhole pressure, providing a safer and more accurate measurement environment for the measuring instruments. Attached Figure Description

[0019] Figure 1 This is a front view of the pressure bearing seat of this utility model;

[0020] Figure 2 yes Figure 1 A three-dimensional view of the pressure bearing seat shown;

[0021] Figure 3 yes Figure 1 The pressure bearing seat shown is a cross-sectional view (AA section).

[0022] Figure 4 This is a schematic diagram of the installation of the pressure bearing seat and the housing in one implementation method;

[0023] Figure 5 This is a front view of the pressure bearing seat in another embodiment;

[0024] Figure 6 yes Figure 5 The BB section view of the pressure bearing seat is shown. Detailed Implementation

[0025] The structure and operation of this solution will be further described below through specific embodiments and accompanying drawings. In the following embodiments, the description is based on the orientation shown in the accompanying drawings when facing the screen. In the following embodiments, only this utility model will be described.

[0026] like Figure 1 , 2 As shown in Figure 3, this embodiment discloses a pressure-bearing base 1 that simultaneously has a multi-core optical fiber and an electrical plug combination mechanism. The pressure-bearing base 1 is used to be installed in a downhole measuring device for transmitting signals between internal measuring instruments. It includes a pressure-bearing seat 2 that is movably and sealed within a protective housing for the measuring instruments. The pressure-bearing seat 2 is provided with multiple axially penetrating cable through holes 21 and optical fiber through holes 22. A cable socket 3 for transmitting electrical signals and an optical fiber socket 4 for transmitting optical fiber signals are respectively installed in the cable through holes 21 and optical fiber through holes 22. The cable socket 3 includes a cable plug 31 with terminals 32 at both ends. The cable plug 31 is directly inserted into the cable through hole 21, and the electrical terminals 32 are used to connect the signal transmission wire 33.

[0027] The fiber optic socket 4 includes a left fiber optic connector 41 and a right fiber optic connector 42, which are respectively inserted into both ends of the fiber optic through hole 22. The two are connected by an energy connector 43. The energy connector 43 can transmit the optical signal received on one side to the other side without loss, and at the same time can seal and isolate the liquid penetration on both sides.

[0028] In use, the pressure-bearing base 2 is inserted into the housing. The two ends of the cable socket 21 and fiber optic socket 22 on the pressure-bearing base 2 are respectively connected to the corresponding wires 33 and optical fibers 44 to transmit signals between the sealed and isolated ends. The pressure-bearing base 2 is in sealed contact with the housing and also has a structure that prevents liquids from penetrating each other.

[0029] like Figure 4As shown, to position the pressure seat 2 in a predetermined location, a limiting step 51 protruding in the axial direction is provided inside the housing 5. The insertion end of the pressure seat 2 is blocked by the limiting step 51, and the inserted pressure seat 2 is then fixed in this position by the locking ring 6. In addition, to prevent the pressure seat 2 from rotating radially, a corresponding sliding groove (not shown in the figure) can be provided on the inner surface of the housing 5, and a slider that protrudes outward and can be inserted into the sliding groove is provided on the outer surface of the pressure seat 2. During installation, the slider on the pressure seat 2 reaches the limiting step 51 along the sliding groove and is then fixed by the locking ring 6, so that the pressure seat 2 cannot move in either the axial or radial direction.

[0030] This embodiment can simultaneously provide the transmission of electrical and fiber optic signals through a single pressure bearing seat, enabling signal transmission for multiple connected measuring instruments. It can also provide more signal transmission options for the same measuring instrument, while reducing the internal wiring layout of the measuring instruments and lowering costs. In addition, the pressure bearing seat itself can isolate the liquid permeability between each other under high downhole pressure, providing a safer and more accurate measurement environment for the measuring instruments.

[0031] In this embodiment, the number of cable through holes 21 and fiber optic through holes 22 can be determined according to the number of measuring instruments to be connected. In this embodiment, five cable through holes 21 and four fiber optic through holes 22 are provided, symmetrically distributed on the axial cross-section of the pressure seat 2. This structure enables the pressure seat 2 to have multi-signal transmission capabilities, simultaneously providing electrical and fiber optic signal services to multiple measuring instruments. Sealing rings that contact the inner surfaces of the cable through holes 21 and fiber optic through holes 22 are respectively provided on the outer surfaces of the cable socket 3 and the fiber optic socket 4, preventing liquid from seeping into the other side through the cable through holes 21 and the fiber optic through holes 22. The cable socket 3 is a single-core cable socket, with each end of the terminal block 32 connected to a single-core wire 33. Similarly, the fiber optic socket 4 is connected with a single-core optical fiber 44.

[0032] In this embodiment, the energy connector 43 includes a left collimating lens 431 and a right collimating lens 432 that respectively contact the left fiber optic connector 41 and the right fiber optic connector 42, and a sapphire glass 433 sandwiched between the left collimating lens 431 and the right collimating lens 432. One end face of the left collimating lens 431 and the right collimating lens 432 is in close contact with the sapphire glass 433. Taking the right fiber optic connector 432 as an example, the optical signal enters the right collimating lens 432 from the right fiber optic connector 42, then enters the sapphire glass 433, then enters the left collimating lens 431, and is then output through the left fiber optic connector 41.

[0033] To prevent the fiber optic connector on the pressure-bearing side from moving, a locking ring is installed at the insertion point of the right fiber optic connector 42 in the fiber optic through-hole 22. The locking ring can fix the right fiber optic connector in the inserted state. Alternatively, a locking ring 45 can be installed at the left fiber optic connector, or both can be installed simultaneously.

[0034] For accurate positioning, annular retaining rings are provided on the outer surfaces of cable socket 3 and fiber optic socket 4, and annular bosses are provided in the cable through hole and fiber optic through hole respectively. After cable socket 3 and fiber optic socket 4 are inserted into cable through hole 21 and fiber optic through hole 22, they are limited to the current insertion position by the contact of the annular retaining rings and annular bosses.

[0035] like Figure 5 , 6 As shown, in another embodiment of this utility model, one cable through-hole 21 and four optical fiber through-holes 22 are provided on the pressure bearing seat 2, and each optical fiber through-hole 22 is arranged around the cable through-hole 21. Here, the cable socket 3 installed in the cable through-hole 21 is a multi-core input / output structure, including a multi-core plug socket 34 with multiple pins at both ends, a limiting ring 341 that fixes the multi-core plug socket 34 in the cable through-hole 21 after insertion, a plug shell 343 that fits around the pins 342, and a bottom cover 344 and an outer cover 345 installed at the openings at both ends of the plug shell 343. The bottom cover 344 and the outer cover 345 have holes 346 at positions corresponding to the pins 342. In this embodiment, the structure of the optical fiber socket 4 is the same as that of the optical fiber socket 4 in the previous embodiment, except that the cable socket 3 uses a multi-core plug socket 34. The multi-core plug socket 34 can connect multiple wires 33 simultaneously through the multiple pins 342 at both ends, thereby realizing the transmission of multiple electrical signals. This embodiment can reduce the number of openings on the pressure seat 2, reduce manufacturing costs, and simplify the structure of the cable socket 3 by using a multi-core signal transmission method instead of a single core.

[0036] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A pressure-bearing base with a multi-core optical fiber and electrical plug assembly mechanism, comprising a pressure-bearing base that is movably and sealed within a housing, characterized in that, The pressure-bearing base is provided with multiple axially penetrating cable and fiber optic through holes. Cable sockets and fiber optic sockets are respectively installed in the cable and fiber optic through holes. The cable socket includes a cable plug with terminals at both ends, which is directly inserted into the cable through hole; The fiber optic socket includes a left fiber optic connector and a right fiber optic connector, which are respectively inserted into both ends of the fiber optic through-hole and are connected by a power connector.

2. The pressure-bearing base according to claim 1, characterized in that, Five cable through holes and four optical fiber through holes are provided, and the cable through holes and the optical fiber through holes are symmetrically distributed on the axial section of the pressure bearing seat.

3. The pressure-bearing base according to claim 1, characterized in that, The energy connector includes a left collimating lens and a right collimating lens that respectively contact the left fiber optic connector and the right fiber optic connector, and a sapphire glass sandwiched between the left collimating lens and the right collimating lens.

4. The pressure-bearing base according to claim 1, characterized in that, The fiber optic through-hole is fitted with a locking ring at the insertion point of the right fiber optic connector.

5. The pressure-bearing base according to claim 1, characterized in that, The cable socket and the fiber optic socket are contacted and limited by an annular retaining ring on their outer surfaces and an annular boss inside the cable through hole and the fiber optic through hole.

6. The pressure-bearing base according to claim 5, characterized in that, The outer surfaces of the cable socket and the fiber optic socket are respectively provided with sealing rings that contact the inner surfaces of the cable through hole and the fiber optic through hole.

7. The pressure-bearing base according to claim 1, characterized in that, The cable socket is a single-core cable socket, with each end of the terminal block connected to a single-wire cable.

8. The pressure-bearing base according to claim 1, characterized in that, The cable socket is a multi-core input / output structure, including a multi-core plug socket with multiple pins at both ends, a limiting ring that fixes the multi-core plug socket in the cable through hole, a plug shell that fits around the pins, and a bottom cover and an outer cover installed at the openings at both ends of the plug shell. The bottom cover and the outer cover have holes at positions corresponding to the pins.

9. The pressure-bearing base according to claim 8, characterized in that, There is one cable through hole and four optical fiber through holes arranged around the cable through hole.

10. The pressure-bearing base according to claim 1, characterized in that, A limiting step protruding towards the axis is provided inside the housing. The insertion end of the pressure bearing seat is blocked by the limiting step, and the inserted pressure bearing seat is fixed inside the housing by a locking ring.

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