Single-phase quick connector

Abstract

The present invention discloses an apparatus comprising: an upper junction box, a lower junction box and an intermediate crosser, wherein the intermediate crosser is connected between the upper junction box and the lower junction box and is used for each single-strand insulated wire core to cross between the upper junction box and the lower junction box. The structure passes through the upper junction box, the intermediate crosser and the lower junction box, so that during operation, cables are respectively connected to the access ends of the upper junction box and the lower junction box, and then inserted into the intermediate crosser to achieve the crossing of the insulating layer cable line. The overall structure is simple, easy to operate, and has strong sealing after connection and high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of oil production equipment, and in particular to a single-phase quick connector. Background Art

[0002] When producing oil in an oil field, a packer is required to form an annular space between the pipe string and the wellbore and between the pipe strings, and to produce an isolation layer to control the production (injection) of fluid and protect the downhole tools of the casing. In oil wells with high fluid production, submersible electric centrifugal pumps are often used to pump oil in order to improve production efficiency and reduce the workload. A cable packer is usually connected to the production pipe string as part of the well control equipment to prevent excessive downhole pressure and blowout.

[0003] However, the existing transducers are complicated to operate in practice, and have poor sealing performance and stability, which cannot meet the existing oil production needs. Therefore, there is an urgent need for a transducer that is simple to operate and highly practical. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a single-phase quick connector to improve the overall performance of the crossover and reduce the difficulty of operation.

[0005] To achieve the above object, the present invention provides a single-phase quick connector, comprising:

[0006] An upper junction box, which is used to separate the insulated wire cores in a multi-core cable from an integrated state of the same outer shell into a separate state of multiple single-strand insulated wire cores;

[0007] A lower junction box, which is used to merge multiple insulated wire cores from a separate state to an integrated state with a same housing;

[0008] The intermediate pass-through is connected between the upper junction box and the lower junction box and is used for passing each single-strand insulated wire core between the upper junction box and the lower junction box.

[0009] Furthermore, the structure of the upper wiring box is consistent with that of the lower wiring box, the upper wiring box includes a wiring box shell for the insulating core wire to pass through, one end of the wiring box shell is connected to a positioning plate, and the other end of the wiring box shell is connected to a fixing plate; the positioning plate is processed with a plurality of positioning holes allowing a single insulating core wire to pass through, and the fixing plate is processed with fixing holes allowing multiple insulating core wires to pass through in an integrated state; and the wiring box shell is filled with an insulating epoxy layer; that is, the installation is to install the upper wiring box and the lower wiring box relative to each other to ensure the function of the wiring box.

[0010] Furthermore, the intermediate penetration device includes a main body shell in the middle, the inside of the main body shell is connected to a threaded connection jack for inserting the cable core conductors at both ends, the threaded connection jack is externally connected to a threaded connection sleeve, an inner insulating sleeve is covered on the outside of the threaded connection sleeve, tapered holes are processed on the inner side of the openings at both ends of the inner insulating sleeve, and sealed insulating sleeves are respectively inserted into the tapered holes at both ends, and the sealed insulating sleeves completely cover the exposed sections of the cable core conductors; the two ends of the main body shell are also respectively connected to clamping components, and the clamping components clamp the inner insulating sleeve and the sealing insulating sleeve.

[0011] Furthermore, the clamping assembly includes a tapered sleeve, one end of which extends into the main shell and is taper-connected to the sealing insulating sleeve, the other end of the tapered sleeve is connected to a connecting sealing sleeve, the connecting sealing sleeve is threadedly connected to the end of the main shell, a locking nut is connected to the free end face of the connecting sealing sleeve, and a standard clamping sleeve for clamping is arranged between the locking nut and the connecting sealing sleeve.

[0012] Furthermore, a sealing ring is arranged between the inner insulating sleeve and the sealing insulating sleeve, the sealing ring is arranged between the tapered sleeve and the main shell, the sealing ring is arranged between the tapered sleeve and the connecting sealing sleeve, and the sealing ring is arranged between the connecting sealing sleeve and the cable core wire.

[0013] Furthermore, the inner insulating sleeve and the sealing insulating sleeve are made of PEEK material.

[0014] Furthermore, the sealing ring is an "O" ring sealing ring

[0015] The beneficial effects of the present invention are embodied in that: the present invention structurally adopts the structure of the upper junction box, the middle pass-through and the lower junction box, so that during operation, the cables are respectively connected to the access ends of the upper junction box and the lower junction, and then inserted into the middle pass-through to realize the crossing of the insulating layer cable. The overall structure is simple, easy to operate, and has strong sealing after connection and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0017] Figure 1 A front view of a single-phase quick connector provided by an embodiment of the present invention;

[0018] Figure 2 A cross-sectional view of the connection structure of the upper junction box of the present invention;

[0019] Figure 3 A cross-sectional view of the connection structure of the lower junction box of the present invention;

[0020] Figure 4 It is a cross-sectional structural diagram of the middle of the present invention;

[0021] Figure 5 Two side views of the upper junction box in the present invention;

[0022] Figure 6 These are two side views of the lower junction box of the present invention.

[0023] In the accompanying drawings, there are upper junction box 1, fixing plate 1-1, connecting sleeve 1-2, insulating tape 1-3, insulating rubber layer 1-4, locking nut 1-5, limiting sleeve 1-6, locking adjustment nut 1-7, standard limiting sleeve 1-8, positioning plate 1-9, positioning hole 1-10, fixing hole 1-11, intermediate crosser 2, locking nut 2-1, first standard sleeve 2-2, second standard sleeve 2-3, connecting sealing sleeve 2-4, tapered sleeve 2-5, sealing insulating sleeve 2-6, threaded connecting jack 2-7, electrode ring 2-8, inner insulating ring 2-9, sealing ring 2-10, lower junction box 3, and packer 4. DETAILED DESCRIPTION

[0024] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0025] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0026] like Figure 1 As shown, an embodiment of the present invention is: a single-phase quick connector, comprising:

[0027] An upper junction box 1, a lower junction box 3 and an intermediate crossing device 2, wherein the upper junction box 1 and the lower junction box 3 have the same structure. When the upper junction box 1 is installed, the upper junction box 1 is used to separate the insulated cores in a multi-core cable from an integrated state in the same outer shell to a separated state of multiple single-strand insulated cores; when the lower junction box 3 is installed, the lower junction box 3 is used to merge the multiple insulated cores from a separated state to an integrated state with the same outer shell; the intermediate crossing device 2 is connected between the upper junction box 1 and the lower junction box 3, the packer 4 is located between the lower junction box 3 and the intermediate crossing device 2, and the cable is passed through the packer 4 through the intermediate crossing device 2; the overall structure is simple, easy to operate, and has strong sealing and reliability after connection.

[0028] Furthermore, if Figure 2 , Figure 5 , Figure 6 As shown, the present invention adopts a three-core cable, and the actual selection is: the upper junction box 1 is for round cable access, and the lower junction box 3 is for flat cable access, so the hole types processed on the positioning plate 1-9 are inconsistent; and generally the same cable is selected, and the structure selection of the two junction boxes is consistent. The upper junction box 1 and the lower junction box 3 include a wire box shell for the insulated core wire to pass through, one end of the wire box shell is connected to the positioning plate 1-9, and the other end of the wire box shell is connected to the fixing plate 1-1; the positioning plate 1-9 is processed with three positioning holes 1-10 for allowing a single strand of insulating core wire to pass through, so that after passing through the positioning holes 1-10, the insulated core wire of the cable is divided from an integrated state to a separated state, and a certain distance is left between each other; the fixing plate 1-1 is processed with a fixing hole 1-11 for allowing multiple strands of insulating core wire to pass through in an integrated state, so that the cable is merged from multiple separated states into an integrated state through a through hole; and the wire box shell is filled with an insulating epoxy layer, and the insulation and sealing of the wire core are guaranteed by the filling of the epoxy layer.

[0029] In the above structure, if Figure 3 As shown, the insulation connection structure of the single-strand wire core in the upper junction box 1 and the lower junction box 3 when connected includes a connection sleeve 1-2, a pin terminal is pressed on the conductor end of the cable core, and the terminal is inserted into the connection sleeve 1-2, and a multi-layer insulation tape 1-3 is wrapped on the outer surface of the connection sleeve 1-2 to ensure the insulation performance of the cable wire joints in the upper junction box 1 and the lower junction box 3; a limit component is also connected to the end position of the insulation tape 1-3, wherein the structure of the limit component is : An insulating rubber layer 1-4 is sleeved on the outer layer of the conductor of the electric wire core wire, a limit sleeve 1-6 is sleeved outside the insulating rubber layer 1-4, a locking nut 1-5 is connected to one end of the limit sleeve 1-6, a locking adjustment nut 1-7 is connected to the other end of the connecting sleeve 1-2, and a standard limit sleeve 1-8 is connected between the locking adjustment nut 1-7 and the limit sleeve 1-6; so that the cable core wire is limited in the upper junction box 1 and the lower junction box 3, ensuring the insulation and stability of the cable core wire and improving its stability.

[0030] Furthermore, if Figure 4As shown, the intermediate crossing device 2 includes a main body shell in the middle, the main body shell is internally connected with a threaded connection jack 2-7 for inserting the cable core conductors at both ends, the threaded connection jack 2-7 is externally connected with a threaded connection sleeve 1-2, and the threaded connection sleeve 1-2 is coated with an inner insulating sleeve, and the inner sides of the openings at both ends of the inner insulating sleeve are processed with tapered holes, and the two ends are respectively inserted into the tapered holes and provided with sealing insulating sleeves 2-6, and the sealing insulating sleeve 2-6 completely covers the exposed section of the cable core conductor; the two ends of the main body shell are also respectively connected with clamping components, and the clamping components clamp the inner insulating sleeve and the sealing insulating sleeve 2-6, and an "O" ring sealing ring 2-10 is provided between the sealing insulating sleeve 2-6 and the inner insulating sleeve to ensure the sealing between the two;

[0031] The clamping assembly includes a tapered sleeve 2-5, one end of which extends into the main shell and is taper-connected to the sealing insulating sleeve 2-6, and the other end of the tapered sleeve 2-5 is connected to a connecting sealing sleeve 2-4, and the connecting sealing sleeve 2-4 is threadedly connected to the end of the main shell, and a locking nut 2-1 is connected to the free end face of the connecting sealing sleeve 2-4, and a standard ferrule for clamping is arranged between the locking nut 2-1 and the connecting sealing sleeve 2-4, wherein the standard ferrule is composed of a first standard ferrule 2-2 and a second standard ferrule 2-3, and an "O" ring sealing ring 2-10 is arranged between the tapered sleeve 2-5 and the main shell to ensure the sealing performance between the main shells; further, in order to ensure the sealing performance of the entire intermediate crosser 2, an "O" ring sealing ring 2-10 is also arranged between the tapered sleeve 2-5 and the connecting sealing sleeve 2-4, and an "O" ring sealing ring 2-10 is also arranged between the connecting sealing sleeve 2-4 and the cable core wire.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A single-phase quick connector, characterized in that: include: An upper junction box, which is used to separate the insulated wire cores in a multi-core cable from an integrated state of the same outer shell into a separate state of multiple single-strand insulated wire cores; A lower junction box, which is used to merge multiple insulated wire cores from a separate state to an integrated state with a same housing; An intermediate crossing device, which is connected between the upper junction box and the lower junction box and is used for each single-strand insulated wire core to cross between the upper junction box and the lower junction box; The intermediate penetration device includes a main body shell in the middle, and the inside of the main body shell is connected to a threaded connection jack for inserting the cable core conductors at both ends, and the outside of the threaded connection jack is connected to a threaded connection sleeve, and an inner insulating sleeve is covered on the outside of the threaded connection sleeve. The inner sides of the two end openings of the inner insulating sleeve are processed with tapered holes, and the two ends are respectively inserted into the tapered holes to provide sealing insulating sleeves, and the sealing insulating sleeves completely cover the exposed sections of the cable core conductors; the two ends of the main body shell are also respectively connected to clamping components, and the clamping components clamp the inner insulating sleeve and the sealing insulating sleeve.

2. A single-phase quick connector according to claim 1, characterized in that: The upper junction box includes a wire box shell for the insulating core wire to pass through, one end of the wire box shell is connected to a positioning plate, and the other end of the wire box shell is connected to a fixing plate; the positioning plate is processed with a plurality of positioning holes allowing a single strand of insulating core wire to pass through, and the fixing plate is processed with fixing holes allowing multiple strands of insulating core wire to pass through in an integrated state; and the wire box shell is filled with an insulating epoxy layer.

3. A single-phase quick connector according to claim 2, characterized in that: The upper wiring box has the same structure as the lower wiring box.

4. A single-phase quick connector according to claim 1, characterized in that: The clamping assembly includes a tapered sleeve, one end of which extends into the main shell and is taper-connected to the sealing insulating sleeve, the other end of which is connected to a connecting sealing sleeve, which is threadedly connected to the end of the main shell, a locking nut is connected to the free end surface of the connecting sealing sleeve, and a standard clamping sleeve for clamping is arranged between the locking nut and the connecting sealing sleeve.

5. A single-phase quick connector according to claim 4, characterized in that: A sealing ring is arranged between the inner insulating sleeve and the sealing insulating sleeve, between the tapered sleeve and the main shell, between the tapered sleeve and the connecting sealing sleeve, and between the connecting sealing sleeve and the cable core wire.

6. A single-phase quick connector according to claim 1, characterized in that: The inner insulating sleeve and the sealing insulating sleeve are made of PEEK material.

7. A single-phase quick connector according to claim 5, characterized in that: The sealing ring is an "O" ring sealing ring.

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