Immersion-resistant wiring structure

Abstract

The utility model relates to the technical field of cable connection, in particular to an anti-immersion type wiring structure, and mainly solves the technical problem that an existing oil immersion type motor wiring structure is easy to leak oil. According to the structure, the wiring ends of the outgoing cable and the power cable are arranged at intervals and are electrically communicated through the connecting metal pipe, the corrosion-resistant glue filling body is arranged in the area between the outgoing cable and the power cable, and the area defined by the outgoing cable, the power cable and the connecting metal pipe is a columnar cavity, so that the corrosion-resistant glue filling body can be easily filled in the area; therefore, the outgoing cable can be effectively prevented from leaking oil to the power cable. Meanwhile, a corrosion-resistant sheath is arranged on the outer side of the connecting metal pipe, the corrosion-resistant sheath covers the whole connecting metal pipe in the axial direction and extends to the outgoing cable and the power cable, the exposed conductive part can be completely covered, electric leakage is avoided, an adhesive filling body is further arranged in the corrosion-resistant sheath, and the reliability of the wiring structure can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of cable connection technology, and in particular to a barrier-type wiring structure. Background Technology

[0002] Oil-immersed motors typically have a lead cable connected to a power cable. One end of the lead cable is placed in the oil chamber, while the other end is placed outside and connected to the power cable.

[0003] In existing technologies, the insulation sheaths of the lead cable and the power cable are typically removed, then they are twisted together and finally fixed with engineering adhesive. However, because the engineering adhesive has a certain viscosity, and there are small gaps between the lead cable and the power cable, the adhesive cannot completely cover these gaps. As a result, after a period of use, oil seeps into the gaps along the strands inside the lead cable and eventually leaks onto the power cable, causing significant oil leakage. Summary of the Invention

[0004] To overcome the technical defect of existing oil-immersed motor wiring structures that are prone to oil leakage, this invention provides a barrier-immersed wiring structure.

[0005] The barrier-type wiring structure provided by this invention includes:

[0006] The cable is led out, with one end designated as the first terminal formed by stripping off the insulation sheath;

[0007] A power cable, which is coaxial with the lead cable, and one end of the power cable is provided as a second terminal formed by stripping off the insulation sheath. The first terminal and the second terminal are opposite to each other and spaced apart.

[0008] A connecting metal tube is fixedly sleeved at both ends of the tube onto the first terminal and the second terminal, respectively.

[0009] A corrosion-resistant filler fills the cylindrical cavity formed by the first terminal, the second terminal, and the connecting metal tube.

[0010] A corrosion-resistant sheath is fitted over the outside of the connecting metal pipe, and both ends of the corrosion-resistant sheath extend to the lead-out cable and the power cable, respectively.

[0011] An adhesive filler fills the annular cavity formed by the corrosion-resistant sheath, the lead-out cable, the power cable, and the connecting metal pipe.

[0012] Optionally, the connecting metal tube includes two connecting pipe segments at both ends and a filling pipe segment between the two connecting pipe segments. The two connecting pipe segments are respectively fixedly sleeved on the first terminal and the second terminal. The diameter of the filling pipe segment is larger than that of the connecting pipe segments.

[0013] Optionally, the filling pipe section and the connecting pipe section are connected by a tapered pipe section.

[0014] Optionally, a positioning protrusion ring is provided in the middle of the inner wall of the filling tube section.

[0015] Optionally, the connecting metal tube is a copper tube.

[0016] Optionally, the corrosion-resistant filler is a cured corrosion-resistant glass glue.

[0017] Optionally, the corrosion-resistant sheath includes a cylindrical body and an annular plate, wherein the annular plate is located at one end of the cylindrical body and its inner circular surface is sleeved on the lead-out cable.

[0018] Optionally, the adhesive filler is a cured engineering adhesive.

[0019] The technical solution provided by this invention has the following advantages compared with the prior art:

[0020] The present invention provides a barrier-type wiring structure in which the terminals of the lead cable and the power cable are arranged alternately and electrically connected through a connecting metal tube. A corrosion-resistant adhesive filler is provided in the area between them. Since the area enclosed by the lead cable, power cable, and connecting metal tube is a cylindrical cavity, the corrosion-resistant adhesive filler can easily fill this area, effectively preventing oil leakage from the lead cable to the power cable. Simultaneously, this structure also features a corrosion-resistant sheath on the outside of the connecting metal tube. The sheath axially covers the entire connecting metal tube and extends to the lead cable and power cable, completely covering the exposed conductive parts to prevent leakage. Furthermore, the corrosion-resistant sheath contains an adhesive filler to ensure the reliability of the wiring structure. This structure overcomes the technical defects of existing oil-immersed motor wiring structures that leak oil and is reliable and effective over a long period. It can be used not only for oil-immersed motors but also for submersible pumps and water-filled motors. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram showing the barrier-type wiring structure in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram showing the connection of the metal tube in an embodiment of the present invention.

[0025] In the picture:

[0026] 1. Outgoing cable; 11. First terminal; 2. Power cable; 21. Second terminal; 3. Connecting metal pipe; 31. Connecting pipe section; 32. Filling pipe section; 33. Tapered pipe section; 34. Positioning convex ring; 4. Corrosion-resistant adhesive filler; 5. Corrosion-resistant sheath; 51. Cylinder; 52. Ring plate; 6. Adhesive filler. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0028] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0029] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of the invention.

[0030] The following is combined Figure 1 and Figure 2 Specific embodiments of the present invention will be described in detail below.

[0031] This embodiment provides a barrier-type wiring structure, including a lead cable 1, a power cable 2, a connecting metal tube 3, a corrosion-resistant adhesive filler 4, a corrosion-resistant sheath 5, and an adhesive filler 6.

[0032] Lead cable 1:

[0033] One end of the lead cable 1 is designated as the first terminal 11 formed by stripping off the insulation sheath.

[0034] Power cable 2:

[0035] The power cable 2 is coaxial with the lead cable 1. One end of the power cable 2 is set as a second terminal 21 formed by stripping off the insulation sheath. The first terminal 11 and the second terminal 21 are opposite to each other and spaced apart.

[0036] It is easy to understand that the so-called spaced arrangement means that there is a certain distance between the first terminal 11 and the second terminal 21, which is mainly used for the formation of the corrosion-resistant filler 4.

[0037] Connecting metal tube 3:

[0038] The two ends of the connecting metal tube 3 are respectively fixedly sleeved on the first terminal 11 and the second terminal 21.

[0039] Specifically, the connecting metal tube 3 is made of copper, which offers better conductivity and meets the connection requirements in terms of hardness. Of course, the connecting metal tube 3 can also be made of iron, aluminum, or other metals, as long as the conductivity and hardness requirements are met.

[0040] Specifically, the connecting metal tube 3 includes two connecting tube sections 31 located at both ends and a filling tube section 32 located between the two connecting tube sections 31. The two connecting tube sections 31 are respectively fixedly sleeved on the first terminal 11 and the second terminal 21. The diameter of the filling tube section 32 is larger than that of the connecting tube sections 31. The larger diameter of the filling tube section 32 provides more installation space for the corrosion-resistant adhesive filler 4, and the convex structure formed by the increased diameter can also limit the adhesive filler 6, thereby improving the reliability of the wiring structure.

[0041] More specifically, the filling pipe section 32 and the connecting pipe section 31 are connected by a tapered pipe section 33. The tapered pipe section 33 and the filling pipe section 32 form an obtuse angle, which is more conducive to the filling of the corrosion-resistant adhesive filler 4. Of course, the filling pipe section 32 and the connecting pipe section 31 can also be directly connected by an annular plate, that is, the tapered pipe section 33 and the filling pipe section 32 form a right angle.

[0042] More specifically, a positioning protrusion 34 is provided in the middle of the inner wall of the filling tube section 32. The positioning protrusion 34 can limit the corrosion-resistant rubber filler 4, thereby improving the reliability of the wiring structure.

[0043] Corrosion-resistant filler 4:

[0044] The corrosion-resistant filler 4 fills the cylindrical cavity formed by the first terminal 11, the second terminal 21, and the connecting metal tube 3.

[0045] It is easy to understand that the corrosion-resistant filler 4 is formed by the curing of corrosion-resistant adhesive.

[0046] Specifically, the corrosion-resistant filler 4 is a cured corrosion-resistant glass glue, which has a low cost and good performance.

[0047] It is easy to understand that "filling" means that the corrosion-resistant adhesive filler 4 fills the columnar cavity.

[0048] Corrosion-resistant sheath 5:

[0049] The corrosion-resistant sheath 5 is fitted on the outside of the connecting metal pipe 3, and the two ends of the corrosion-resistant sheath 5 extend to the lead cable 1 and the power cable 2 respectively.

[0050] It should be noted that the two ends of the so-called corrosion-resistant sheath 5 extend to the lead cable 1 and the power cable 2 respectively. That is, the length of the corrosion-resistant sheath 5 is greater than the length of the connecting metal pipe 3, so that the corrosion-resistant sheath 5 can extend to the area of ​​the lead cable 1 or the power cable 2 where the insulation is not stripped.

[0051] Specifically, the corrosion-resistant sheath 5 includes a cylindrical body 51 and an annular plate 52. The annular plate 52 is located at one end of the cylindrical body 51 and its inner surface is fitted onto the lead-out cable 1. The annular plate 52 has two functions: first, it can act as a sealant when injecting adhesive, making operation easier; second, the annular plate 52 fitted onto the lead-out cable 1 can improve the reliability of the wiring structure.

[0052] More specifically, the cylinder 51 and the ring plate 52 are integrally formed.

[0053] Specifically, the corrosion-resistant sheath 5 can be made of rubber or silicone with corrosion-resistant properties.

[0054] Adhesive filler 6:

[0055] The adhesive filler 6 fills the annular cavity formed by the corrosion-resistant sheath 5, the lead cable 1, the power cable 2, and the connecting metal pipe 3.

[0056] Specifically, the adhesive filler 6 is a cured engineering adhesive.

[0057] More specifically, the volume ratio of A-type adhesive to B-type adhesive in engineering adhesives is 1:1, with an allowable error of 1:0.7 to 1:1.2.

[0058] The fabrication method of the barrier-type wiring structure in this embodiment is as follows:

[0059] 1) Pre-connection processing

[0060] 1.1 Strip the insulation from the power cable 2 and the lead cable 1 to form the first terminal 11 and the second terminal 21;

[0061] 1.2. Clean the sharp corners and burrs on the wire terminals;

[0062] 1.3 Wipe the first terminal 11 and the second terminal 21, as well as the insulation surface near the terminals, with alcohol, and let them air dry naturally;

[0063] 1.4. Place in a clean place to avoid contamination of the surface with dirt;

[0064] 1.5. Wipe the connecting metal pipe 3 with alcohol and place it in a clean place;

[0065] 2) Connection processing

[0066] 2.1. Thread the corrosion-resistant sheath 5 onto the lead cable 1, and make the pouring port of the corrosion-resistant sheath 5 aligned with the direction of the stripped portion of the lead cable 1.

[0067] 2.2 Connect the lead cable 1 to the connecting metal pipe 3 using industrial-grade hydraulic clamps to tighten one end of the lead cable 1 to the connecting metal pipe 3;

[0068] 2.3. Inject corrosion-resistant glass glue into the middle of the connecting metal pipe 3 and fill it completely;

[0069] 2.4 Connect the power cable 2 to the connecting metal pipe 3, and use industrial-grade hydraulic clamps to tighten the other end of the power cable 2 and the connecting metal pipe 3;

[0070] 3) Curing and shaping

[0071] 3.1 Install the corrosion-resistant sheath 5 into the appropriate position, so that the position can cover the connecting metal pipe 3;

[0072] 3.2 The volume ratio of A and B components in the extruded engineering adhesive is 1:1;

[0073] 3.3 After extrusion, crush the precipitates of each component, and then mix the two components evenly to achieve a uniform color.

[0074] 3.4. Inject the engineering adhesive through the pouring port of the corrosion-resistant sleeve 5, filling the sleeve 5 completely. Squeeze out the air by hand, ensuring there are no air bubbles.

[0075] 3.5. Allow to stand and cure; it will take 24 hours to cure.

[0076] The above are merely specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and they should all be covered within the protection scope of the claims.

Claims

1. A barrier terminal structure, characterized by, Also includes: The cable (1) is led out, and one end of it is set as the first terminal (11) formed by stripping off the insulation. A power cable (2) is coaxial with the lead cable (1), and one end of the power cable (2) is a second terminal (21) formed by stripping off the insulation sheath. The first terminal (11) and the second terminal (21) are opposite to each other and spaced apart. Connect the metal tube (3), with its two ends fixedly sleeved on the first terminal (11) and the second terminal (21) respectively; The corrosion-resistant filler (4) fills the columnar cavity formed by the first terminal (11), the second terminal (21) and the connecting metal tube (3); A corrosion-resistant sheath (5) is fitted over the outside of the connecting metal pipe (3), and the two ends of the corrosion-resistant sheath (5) extend to the lead cable (1) and the power cable (2), respectively. The adhesive filler (6) fills the annular cavity formed by the corrosion-resistant sheath (5), the lead cable (1), the power cable (2), and the connecting metal tube (3).

2. The immersion resistant wiring structure of claim 1, wherein, The connecting metal tube (3) includes two connecting tube segments (31) located at both ends and a filling tube segment (32) located between the two connecting tube segments (31). The two connecting tube segments (31) are respectively fixedly sleeved on the first terminal (11) and the second terminal (21). The diameter of the filling tube segment (32) is larger than that of the connecting tube segment (31).

3. The immersion resistant wiring structure of claim 2, wherein, The filling pipe section (32) and the connecting pipe section (31) are connected by a tapered pipe section (33).

4. The immersion resistant wiring structure of claim 2, wherein, The inner wall of the filling tube section (32) is provided with a positioning protrusion ring (34).

5. The immersion-resistant wiring structure according to any one of claims 2 to 4, characterized by The connecting metal pipe (3) is a copper pipe.

6. The immersion resistant wiring structure of claim 1, wherein, The corrosion-resistant filler (4) is a cured corrosion-resistant glass glue.

7. The immersion resistant wiring structure of claim 1, wherein, The corrosion-resistant sheath (5) includes a cylindrical body (51) and an annular plate (52). The annular plate (52) is located at one end of the cylindrical body (51) and its inner circular surface is sleeved on the lead cable (1).

8. The immersion resistant wiring structure of claim 1, wherein, The adhesive filler (6) is a cured engineering adhesive.

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