Waterproof and anti-corrosion connecting structure and connecting method for wind power plant cable

Abstract

The invention relates to the technical field of wind power plant cable connecting structures, in particular to a wind power plant cable waterproof and anti-corrosion connecting structure which comprises a bottom shell and an upper cover connected to the opening side of the bottom shell, sealing joints are arranged on the two sides of the bottom shell, and a first wire and a second wire are arranged on the inner sides of the two sealing joints in a penetrating mode respectively; wherein an inner sealing mechanism is further arranged in the bottom shell, the end portion of the first wire and the end portion of the second wire are connected through a connecting piece, and a locking piece for connecting and fixing the first wire and the second wire is further arranged in the bottom shell. The inner sealing mechanism is further arranged in the bottom shell and used for conducting waterproof operation on the connecting position of the two wires again, even if a sealing connector is damaged, the waterproof effect of the connecting position of the wires can be ensured through the design of the inner sealing mechanism, and therefore the problem that the wires are oxidized and corroded when meeting water is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind farm cable connection structures, and in particular to a wind farm cable waterproof and corrosion-resistant connection structure and a connection method. Background Art

[0002] As an important part of renewable energy, wind farms play a key role in the transformation of the global energy structure. However, the operating efficiency and reliability of wind farms depend largely on the performance of their cable systems. Especially in harsh environmental conditions, such as seaside and mountainous areas, the stability and durability of cable connections face severe challenges.

[0003] In the existing wind farm cable connection technology, sealed joints are commonly used to seal the wires placed in the junction box. This method can protect the wire connection from the external environment to a certain extent, such as water vapor, oxidation corrosion, etc. However, traditional sealed joints can only achieve a single seal. Once the sealed joint is damaged, the protective performance of the wire connection will not be guaranteed, which may lead to oxidation corrosion of the wire and affect the normal operation of the wind farm.

[0004] Especially in humid environments, copper conductors are easily oxidized to form verdigris, which not only reduces the conductivity of the conductors, but may also cause cable failures, increasing the maintenance costs and downtime of wind farms.

[0005] Based on this, in order to further improve the sealing protection of existing cable connections, we propose a waterproof and corrosion-resistant connection structure and connection method for wind farm cables. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art that traditional sealing joints can only achieve single sealing, and once the sealing joint is damaged, the protective performance of the wire connection cannot be guaranteed, and a waterproof and corrosion-resistant connection structure and connection method for wind farm cables are proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A wind farm cable waterproof and corrosion-resistant connection structure is designed, comprising a bottom shell and an upper cover connected to an opening side of the bottom shell:

[0009] Sealed joints are provided on both sides of the bottom shell, and a first wire and a second wire are respectively passed through the inner sides of the two sealed joints;

[0010] An inner sealing mechanism is also arranged inside the bottom shell, the ends of the first wire and the second wire are connected via a connector, and a locking member for fixing the connection between the first wire and the second wire is also arranged inside the bottom shell.

[0011] Furthermore, the upper cover is connected to the bottom shell via fasteners;

[0012] A sealing ring is arranged at the upper end of the bottom shell, and the sealing ring is attached between the upper cover and the bottom shell.

[0013] Furthermore, the end surface of the sealing ring is provided with an extension portion, and the extension portion is provided with a through hole for avoiding the fastener;

[0014] Any cross section of the sealing ring is in an L-shaped structure.

[0015] Further, the inner sealing mechanism includes two first guide plates and two second guide plates symmetrically distributed in the bottom shell;

[0016] One end of the first guide plate has an arc portion closed with the side wall of the bottom shell, and a bending channel is formed between the first guide plate and the second guide plate.

[0017] Furthermore, the first wire and the second wire are both placed in the two bending channels in a bent shape, wherein both ends of the first wire and the second wire are arranged between the two second guide plates.

[0018] Further, an inlet is formed between the first guide plate and the arc-shaped portion of another first guide plate;

[0019] A lower rubber pad is fixedly connected at the inlet, the bottom of the upper cover has a cover plate sealing the two defined areas of the first guide plates, and an upper rubber pad matched with the lower rubber pad is formed at the bottom of the cover plate.

[0020] Furthermore, the lower rubber pad and the upper rubber pad are both configured as hollow structural members.

[0021] Furthermore, the locking member is a pressure plate arranged above the connection between the first wire and the second wire, and a support seat is fixedly installed on the inner side of the bottom shell. The pressure plate is connected and fixed to the support seat by fasteners, and the ends of the first wire and the second wire are clamped between the support seat and the pressure plate.

[0022] Furthermore, the connecting piece is a C-shaped copper wire clamp connected to the outside of the first wire and the second wire.

[0023] In addition, the present invention also proposes a wind farm cable waterproof and corrosion-resistant connection method, using the above connection structure, including the following steps:

[0024] The bottom shell and the upper cover are separated, and the first wire and the second wire are passed through the two sealing joints in sequence and extended to the inside of the bottom shell;

[0025] Passing the ends of the first wire and the second wire into the inner sealing mechanism, and fixing the two by a connecting piece;

[0026] The bottom shell and the upper cover are connected by fasteners to complete the connection between the first wire and the second wire.

[0027] The present invention proposes a wind farm cable waterproof and corrosion-resistant connection structure and connection method, which have the beneficial effect that: in the present invention, on the basis of sealing the wires with traditional sealing joints, an internal sealing mechanism is also provided inside the bottom shell, which is used to waterproof the connection between the two wires again. Even if the sealing joint is damaged, the design of the internal sealing mechanism can be used to ensure the waterproof effect of the wire connection, thereby avoiding the problem of corrosion caused by oxidation of the wires when encountering water, thereby achieving a comprehensive waterproof and corrosion-resistant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the locking member structure of the present invention;

[0031] Figure 4 A top view of the bottom shell of the present invention;

[0032] Figure 5 It is a schematic diagram of the lower rubber pad structure of the present invention.

[0033] In the figure: 1, bottom shell; 11, sealing ring; 12, extension part; 2, upper cover; 3, sealing joint; 4, first wire; 5, second wire; 6, inner sealing mechanism; 61, first guide plate; 62, second guide plate; 63, arc-shaped part; 64, bending channel; 65, lower rubber pad; 66, cover plate; 67, upper rubber pad; 7, connecting piece; 8, locking piece; 81, supporting seat. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-5An embodiment of the present invention discloses a waterproof and corrosion-resistant connection structure of a wind farm cable. Specifically, the connection structure includes a bottom shell 1 and an upper cover 2 connected to the opening side of the bottom shell 1. Sealing joints 3 are arranged on both sides of the bottom shell 1, wherein the sealing joint 3 may include a sleeve, and a plurality of deformation sheets are arranged on the outside of the sleeve, wherein a conical sleeve is also threadedly connected to the outside of the sleeve, and the end of the deformation sheet is deformed by contacting the inclined surface of the conical sleeve, and a rubber sleeve is also arranged on the inner side of the plurality of deformation sheets, and the rubber sleeve is arranged on the outside of the conductor, and the deformation of the deformation sheet causes the rubber sleeve to be squeezed on the conductor to achieve sealing of the conductor. The specific structure and connection method are conventional means for technicians in the relevant field, and will not be described in detail here.

[0036] A first wire 4 and a second wire 5 are respectively passed through the inner sides of the two sealing joints 3, wherein an internal sealing mechanism 6 is also provided inside the bottom shell 1, and the ends of the first wire 4 and the second wire 5 are connected by a connecting piece 7, and a locking piece 8 for fixing the connection between the first wire 4 and the second wire 5 is also provided inside the bottom shell 1.

[0037] In some embodiments, the upper cover 2 of the present invention is connected to the bottom shell 1 through fasteners. Preferably, the fasteners in this embodiment are bolts, and the specific number of bolts can be adaptively selected by technicians in the relevant field.

[0038] A sealing ring 11 is disposed at the upper end of the bottom shell 1 , and the sealing ring 11 is attached between the upper cover 2 and the bottom shell 1 .

[0039] It should be noted that, in this embodiment, the end surface of the sealing ring 11 has an extension portion 12, and the extension portion 12 has a through hole for avoiding the fastener;

[0040] Any cross section of the sealing ring 11 is in an L-shaped structure, that is, in this embodiment, an extension portion 12 is provided on the sealing ring 11 for penetration and positioning with the fasteners on the upper cover 2, thereby ensuring the installation and positioning stability of the sealing ring 11. Of course, in order to improve the sealing effect, in the present invention, the cross section of the sealing ring 11 is designed with an L-shaped structure, and its outer bent portion is sleeved on the outer side of the bottom shell 1, thereby ensuring the connection sealing ring between the bottom shell 1 and the upper cover 2.

[0041] In some embodiments, the inner sealing mechanism 6 of the present invention includes two first guide plates 61 and two second guide plates 62 symmetrically distributed in the bottom shell 1;

[0042] One end of the first guide plate 61 has an arc portion 63 closed with the side wall of the bottom shell 1 , and a bending channel 64 is formed between the first guide plate 61 and the second guide plate 62 .

[0043] On the basis of the above embodiments, in the present invention, the first wire 4 and the second wire 5 are both placed in the two bending channels 64 in a bent shape, wherein both ends of the first wire 4 and the second wire 5 are arranged between the two second guide plates 62 .

[0044] That is to say, in the present invention, a sealing ring 11 is used between the bottom shell 1 and the upper cover 2 to achieve sealing at the connection between the two, so as to achieve preliminary waterproofing;

[0045] In addition, the connection between the first wire 4 and the second wire 5 and the bottom shell 1 is sealed by using a sealing joint 3 to ensure the sealing operation of the connection of the wires;

[0046] Furthermore, in the present invention, an internal sealing mechanism 6 is also provided inside the bottom shell 1, which is used to waterproof the connection between the two wires again. Even if the sealing joint 3 is damaged, the design of the internal sealing mechanism 6 can be used to ensure the waterproof effect of the wire connection, thereby avoiding the problem of corrosion caused by oxidation of the wire when encountering water, thereby achieving a comprehensive waterproof and anti-corrosion effect.

[0047] Specifically, the present invention adopts a design of two first guide plates 61 and two second guide plates 62, a single first guide plate 61 and a single second guide plate 62 are grouped together to form a bending channel 64, and the wire is bent and placed in the bending channel 64. In subsequent connections, the connection at the inner end of the wire can be sealed again by closing the bending channel 64, so that when the sealing joint 3 is damaged, water can be prevented from entering the connection between the two wires to cause oxidation corrosion.

[0048] On the basis of the above embodiment, an inlet is formed between the first guide plate 61 and the arc-shaped portion 63 of another first guide plate 61 in the present invention, that is, two inlets are formed between the two first guide plates 61 in the present invention, and the two inlets are respectively used for the first wire 4 and the second wire 5 to enter;

[0049] A lower rubber pad 65 is fixedly connected at the entrance, and the bottom of the upper cover 2 has a cover plate 66 that seals the areas defined by the two first guide plates 61 . An upper rubber pad 67 that matches the lower rubber pad 65 is formed at the bottom of the cover plate 66 .

[0050] That is to say, in the present invention, when the bottom shell 1 and the upper cover 2 are connected, the cover plate 66 simultaneously covers the upper side of the two first guide plates 61 to seal the upper side of the area defined by the two first guide plates 61. At the same time, since a lower rubber pad 65 is also provided at the entrance, an upper rubber pad 67 is provided at the bottom of the cover plate 66. The lower rubber pad 65 and the upper rubber pad 67 are respectively provided on both sides of the corresponding wire. In this way, when the upper cover 2 is connected, the lower rubber pad 65 and the upper rubber pad 67 respectively squeeze the two sides of the relative wire to achieve the sealing operation of the wire at the entrance. At this time, the interval limited by the two first guide plates 61, the cover plate 66, the lower rubber pad 65 and the upper rubber pad 67 jointly enclose a sealed space, thereby ensuring the connection sealing of the first wire 4 and the second wire 5 in the sealed space.

[0051] It should be noted that in order to ensure the deformation ability of the lower rubber pad 65 and the upper rubber pad 67 in the present invention, the lower rubber pad 65 and the upper rubber pad 67 in this embodiment are both configured as hollow structural members. Of course, in further embodiments, the opposite surfaces of the lower rubber pad 65 and the upper rubber pad 67 may also be formed with arc-shaped openings that fit the outside of the relative wire.

[0052] In some embodiments, the locking member 8 in the present invention is a pressure plate arranged above the connection between the first wire 4 and the second wire 5, and a support seat 81 is fixedly installed on the inner side of the bottom shell 1, and the pressure plate is connected and fixed to the support seat 81 by fasteners, and the ends of the first wire 4 and the second wire 5 are clamped between the support seat 81 and the pressure plate, that is, in the present invention, the pressure plate is pressed and fixed by fasteners, so that the first wire 4 and the second wire 5 are pressed and fixed to improve the stability of the connection between the two.

[0053] Of course, the connecting member 7 in the present invention is a C-shaped copper wire clamp connected to the outside of the first conductive wire 4 and the second conductive wire 5 .

[0054] In addition, the present invention also proposes a wind farm cable waterproof and corrosion-resistant connection method, using the above connection structure, and specifically the connection structure includes the following steps:

[0055] The bottom shell 1 and the upper cover 2 are separated, and the first wire 4 and the second wire 5 are sequentially passed through the two sealing joints 3 and extended to the inside of the bottom shell 1;

[0056] The ends of the first wire 4 and the second wire 5 are passed through the inner sealing mechanism 6 and fixed by a connecting piece 7;

[0057] The bottom shell 1 and the upper cover 2 are connected by fasteners to complete the connection of the first wire 4 and the second wire 5.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wind farm cable waterproof and corrosion-resistant connection structure, comprising a bottom shell (1) and an upper cover (2) connected to an opening side of the bottom shell (1), characterized in that: Sealed joints (3) are provided on both sides of the bottom shell (1), and a first conductive wire (4) and a second conductive wire (5) are respectively passed through the inner sides of the two sealed joints (3); An internal sealing mechanism (6) is also provided inside the bottom shell (1), the ends of the first wire (4) and the second wire (5) are connected via a connecting piece (7), and a locking piece (8) for fixing the connection between the first wire (4) and the second wire (5) is also provided inside the bottom shell (1).

2. A wind farm cable waterproof and corrosion-resistant connection structure according to claim 1, characterized in that: The upper cover (2) is connected to the bottom shell (1) via a fastener; A sealing ring (11) is provided at the upper end of the bottom shell (1), and the sealing ring (11) is fitted between the upper cover (2) and the bottom shell (1).

3. A wind farm cable waterproof and corrosion-resistant connection structure according to claim 2, characterized in that: An extension portion (12) is provided on the end surface of the sealing ring (11), and a through hole is provided on the extension portion (12) to avoid the fastener; Any cross section of the sealing ring (11) is in an L-shaped structure.

4. A wind farm cable waterproof and corrosion-resistant connection structure according to claim 1, characterized in that: The inner sealing mechanism (6) comprises two first guide plates (61) and two second guide plates (62) symmetrically distributed in the bottom shell (1); One end of the first guide plate (61) has an arc-shaped portion (63) closed to the side wall of the bottom shell (1), and a bending channel (64) is formed between the first guide plate (61) and the second guide plate (62).

5. A wind farm cable waterproof and corrosion-resistant connection structure according to claim 4, characterized in that: The first conductive wire (4) and the second conductive wire (5) are both placed in the two bending channels (64) in a bent shape, wherein the two ends of the first conductive wire (4) and the second conductive wire (5) are arranged between the two second guide plates (62).

6. A wind farm cable waterproof and corrosion-resistant connection structure according to claim 5, characterized in that: An inlet is formed between the first guide plate (61) and the arc-shaped portion (63) of another first guide plate (61); A lower rubber pad (65) is fixedly connected at the entrance, and the bottom of the upper cover (2) has a cover plate (66) that seals the areas defined by the two first guide plates (61), and the bottom of the cover plate (66) is formed with an upper rubber pad (67) that matches the lower rubber pad (65).

7. A wind farm cable waterproof and anti-corrosion connection structure according to claim 6, characterized in that: The lower rubber pad (65) and the upper rubber pad (67) are both configured as hollow structural members.

8. The waterproof and corrosion-resistant connection structure of wind farm cables according to claim 5, characterized in that: The locking member (8) is a pressure plate arranged above the connection point between the first wire (4) and the second wire (5); a support seat (81) is fixedly installed on the inner side of the bottom shell (1); the pressure plate is connected and fixed to the support seat (81) by a fastener; the ends of the first wire (4) and the second wire (5) are clamped between the support seat (81) and the pressure plate.

9. A wind farm cable waterproof and corrosion-resistant connection structure according to any one of claims 1 to 8, characterized in that: The connecting piece (7) is a C-shaped copper wire clamp connected to the outside of the first wire (4) and the second wire (5).

10. A waterproof and anti-corrosion connection method for wind farm cables, using the connection structure as described in any one of claims 1 to 9, characterized in that: The method comprises the following steps: The bottom shell (1) and the upper cover (2) are separated, and the first wire (4) and the second wire (5) are passed through the two sealing joints (3) in sequence and extended to the inside of the bottom shell (1); The ends of the first wire (4) and the second wire (5) are passed through the inner sealing mechanism (6), and the two are fixed by a connecting piece (7); The bottom shell (1) and the upper cover (2) are connected by fasteners to complete the connection of the first wire (4) and the second wire (5).

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