High-voltage cable copper shell external wrapping glue injection waterproof intermediate joint

Abstract

The utility model discloses a high-voltage cable copper shell external wrapping glue injection waterproof intermediate joint comprising a joint main body, and the outer side of the joint main body is provided with a copper shell; the waterproof structure comprises a mesh belt, a mesh sleeve, waterproof glue and a sealing adhesive tape, the mesh belt wraps the outer side of the copper shell, the mesh sleeve sleeves the outer side of the mesh belt, the mesh size of the mesh sleeve is larger than that of the mesh belt, the waterproof glue is solidified in meshes of the mesh belt and meshes of the mesh sleeve, and the sealing adhesive tape wraps the outer side of the mesh sleeve; and the two first sealing daubs are located at the two ends of the waterproof structure correspondingly and used for sealing the two ends of the waterproof structure. Compared with a traditional mode that a glass fiber reinforced plastic shell is additionally arranged outside a copper shell and glue is poured into the copper shell, the LED lamp tube is small in occupied space and higher in applicability.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage cable accessories technology, and in particular to a waterproof intermediate joint for the outer copper shell of a high-voltage cable with glue injection. Background Technology

[0002] Currently, a large number of high-voltage intermediate joints on the market lack fiberglass protective shells, resulting in poor waterproofing performance. If further waterproofing enhancement is needed, the common solution is to install an external fiberglass protective shell and then fill the interior with sealant. However, this method has drawbacks: firstly, intermediate joints from different manufacturers have different structural dimensions, requiring different fiberglass shells for each manufacturer, making uniformity difficult; secondly, fiberglass shells are generally large, and in areas with limited installation space, installing them can cause interference, making installation impossible and limiting their application scenarios. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a waterproof intermediate joint for high-voltage cables with external copper shell wrapping and glue injection, which occupies little space and has strong applicability.

[0004] According to an embodiment of the present invention, a high-voltage cable copper shell external wrapping and waterproof intermediate joint includes:

[0005] The connector body has a copper shell on its outer side;

[0006] A waterproof structure, comprising a mesh belt, a mesh sleeve, waterproof adhesive, and sealing tape, wherein the mesh belt is wrapped around the outside of the copper shell, the mesh sleeve is fitted over the outside of the mesh belt, the mesh size of the mesh sleeve is larger than the mesh size of the mesh belt, the waterproof adhesive is cured within the mesh of the mesh belt and the mesh of the mesh sleeve, and the sealing tape is wrapped around the outside of the mesh sleeve.

[0007] Two first sealant puttyes are respectively located at both ends of the waterproof structure, and are used to seal both ends of the waterproof structure.

[0008] The high-voltage cable copper shell externally wrapped with adhesive for waterproofing intermediate joint, according to the embodiments of the present invention, has at least the following beneficial effects:

[0009] By wrapping a mesh belt around the outside of the copper shell, placing a mesh sleeve over the mesh belt, wrapping a sealing tape around the mesh sleeve, and setting two first sealing puttyes for end sealing, a space for injecting waterproof adhesive can be formed between the sealing tape and the copper shell using the mesh of the mesh belt and the mesh sleeve. Compared with the traditional method of adding a fiberglass shell to the outside of the copper shell and injecting adhesive inside, this embodiment occupies less space and has greater applicability. In addition, since the mesh size of the inner mesh belt is smaller than that of the outer mesh belt, the smaller mesh of the mesh belt can be used to divide the space for containing waterproof adhesive in the inner layer more finely, which can effectively reduce the generation of air bubbles when injecting and molding waterproof adhesive. At the same time, the larger mesh of the outer mesh sleeve can be used to provide more space for containing waterproof adhesive, so as to ensure sufficient waterproof performance.

[0010] According to some embodiments of this utility model, the high-voltage cable copper shell external wrapping and waterproof intermediate joint further includes:

[0011] Two sets of exhaust pipes are provided, each set corresponding to one of the two first sealing sealant. Each exhaust pipe has a first end and a second end, the first end of which passes through the first sealing sealant and extends to the mesh belt.

[0012] According to some embodiments of the present invention, the second end is located outside the first sealing putty and partially inserted into the first sealing putty, so as to seal the second end through the first sealing putty.

[0013] According to some embodiments of the present invention, the sealing tape has a plurality of filling ports extending to the inner side of the sealing tape.

[0014] According to some embodiments of the present invention, a second sealing putty is provided on the outer side of the sealing tape, and the second sealing putty is used to seal the glue inlet.

[0015] According to some embodiments of this utility model, the sealing tape is transparent.

[0016] According to some embodiments of the present invention, the glue-filling port has multiple ports, which are spaced apart along the length of the copper shell.

[0017] According to some embodiments of this utility model, the high-voltage cable copper shell external wrapping and waterproof intermediate joint further includes:

[0018] A waterproof tape, which is wrapped around the outside of the sealing tape.

[0019] According to some embodiments of this utility model, the high-voltage cable copper shell external wrapping and waterproof intermediate joint further includes:

[0020] PVC adhesive tape, which is wrapped around the outside of the waterproof tape.

[0021] According to some embodiments of this utility model, both the mesh belt and the mesh sleeve are made of plastic.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of the waterproof intermediate joint for the copper shell of the high-voltage cable according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a schematic diagram of the state of the high-voltage cable copper shell external wrapping waterproof intermediate joint when the exhaust pipe is inserted during the manufacturing process.

[0027] Figure 4 This is a schematic diagram of the state of the waterproof intermediate joint of the high-voltage cable copper shell wrapped with glue during the manufacturing process according to an embodiment of this utility model.

[0028] Icon labels:

[0029] Copper shell 100;

[0030] 200 mesh belts;

[0031] Netting 300;

[0032] Waterproof adhesive 400;

[0033] 500 g / m² of sealing tape;

[0034] First sealing putty 600;

[0035] Exhaust pipe 700;

[0036] Waterproof tape 800;

[0037] PVC adhesive tape 900. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0041] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0042] This utility model discloses a waterproof intermediate joint for high-voltage cables with external copper shell wrapping and adhesive injection, comprising: a joint body, a waterproof structure, and a first sealing putty 600. It should be noted that in this embodiment, high voltage refers to the range of 66kV-220kV. The following refers to... Figure 1 and Figure 2 The diagram illustrates the structure of a waterproof intermediate joint with an external copper shell wrapping and adhesive injection for high-voltage cables.

[0043] The outer side of the connector body is provided with a copper shell 100.

[0044] The waterproof structure includes a mesh belt 200, a mesh sleeve 300, waterproof adhesive 400, and sealing tape 500. Both the mesh belt 200 and the mesh sleeve 300 are mesh structures. The mesh belt 200 is wrapped around the outside of the copper shell 100, and the mesh sleeve 300 is fitted onto the outside of the mesh belt 200. The mesh size of the mesh sleeve 300 is larger than that of the mesh belt 200. The waterproof adhesive 400 is cured within the mesh of the mesh belt 200 and the mesh of the mesh sleeve 300, forming an integral structure with the mesh belt 200 and the mesh sleeve 300. The sealing tape 500 is wrapped around the outside of the mesh sleeve 300 to seal the outside of the mesh sleeve 300, thereby sealing the waterproof adhesive 400 cured within the mesh of the mesh belt 200 and the mesh of the mesh sleeve 300.

[0045] Two first sealant 600s are provided, and the two first sealant 600s are located at both ends of the waterproof structure, respectively, to seal the two ends of the waterproof structure.

[0046] This embodiment of the high-voltage cable copper shell external waterproof joint utilizes a mesh belt 200 wrapped around the outside of the copper shell 100, a mesh sleeve 300 fitted over the mesh belt 200, and a sealing tape 500 wrapped over the mesh sleeve 300. Two first sealing putty 600s are also provided for end sealing. This creates a space between the sealing tape 500 and the copper shell 100 for injecting waterproof adhesive 400 (which is fluid during injection), using the mesh of the mesh belt 200 and the mesh sleeve 300. This is different from the traditional method of using a mesh belt 200 and a mesh sleeve 300 for sealing the copper shell. Compared to the method of adding a fiberglass shell to the outside and filling the inside with adhesive, this embodiment occupies less space and has greater applicability. In addition, since the mesh size of the inner mesh belt 200 is smaller than that of the outer mesh belt, the smaller mesh of the mesh belt 200 can be used to divide the space for the inner layer to contain the waterproof adhesive 400 more finely, which can effectively reduce the generation of air bubbles when filling and molding the waterproof adhesive 400. At the same time, the larger mesh of the outer mesh sleeve 300 can be used to provide more space to contain the waterproof adhesive 400, so as to ensure sufficient waterproof performance.

[0047] In some embodiments of this utility model, both the mesh belt 200 and the mesh sleeve 300 are made of plastic, which is low in cost and easy to manufacture.

[0048] In some embodiments of this utility model, the high-voltage cable copper shell external wrapping waterproof intermediate joint also includes two sets of vent pipes 700. The two sets of vent pipes 700 are respectively set for two first sealing putty 600. The vent pipes 700 have opposite first ends and second ends. The first end of the vent pipe 700 passes through the first sealing putty 600 and extends to the mesh belt 200. The vent pipes 700 can be used to discharge the internal gas when injecting glue into the mesh of the mesh belt 200 and the mesh sleeve 300, thereby improving the glue injection efficiency and glue injection quality.

[0049] Obviously, a set of exhaust pipes 700 may include one exhaust pipe 700 or multiple exhaust pipes 700.

[0050] Based on the above embodiments, further, the second end portion of the exhaust pipe 700 is located outside the first sealing putty 600, and is partially inserted into the first sealing putty 600 (e.g., Figure 2 As shown), the second end is sealed with the first sealant 600. It is understood that when injecting sealant into the mesh of the mesh belt 200 and the mesh sleeve 300, the second end of the exhaust pipe 700 can be exposed outside the first sealant 600 (as shown). Figure 3As shown), venting is achieved using the vent pipe 700. However, after fabrication, if the second end of the vent pipe 700 remains exposed outside the first sealant 600, moisture may enter the drain pipe from the second end, subsequently reaching the waterproof sealant 400, thus reducing its waterproofing performance. Therefore, after fabrication, the second end of the vent pipe 700 can be inserted into the first sealant 600 (e.g., ...). Figure 2 As shown in the figure, the second end of the exhaust pipe 700 is sealed with the first sealing putty 600 to ensure waterproof performance.

[0051] In some embodiments of this utility model, a plurality of dispensing ports (not shown) extending to the inner side of the sealing tape 500 are formed on the sealing tape 500, as shown in the figure. Figure 4 As shown, this is the location where the glue injection valve is placed during glue injection.

[0052] Furthermore, a second sealing putty (not shown in the figure) is provided on the outer side of the sealing tape 500. The second sealing putty is used to seal the glue injection port. It can be understood that when glue is injected into the mesh of the mesh belt 200 and the mesh sleeve 300, the glue injection port is the location where the glue injection valve is arranged. However, after the glue injection is completed, the glue injection valve needs to be removed to avoid occupying space. At this time, a gap is formed at the glue injection port. Therefore, the second sealing putty can be provided to seal the glue injection port after the glue injection valve is removed, thereby improving the sealing performance and ensuring waterproof performance.

[0053] Furthermore, the sealing tape 500 is transparent, making it easy to observe during the application of the adhesive.

[0054] Furthermore, the glue-filling port has multiple ports, which are spaced apart along the length of the copper shell 100. This ensures the uniformity of glue filling during the filling process and improves the glue filling efficiency.

[0055] Reference Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the high-voltage cable copper shell external wrapping waterproof intermediate joint also includes a waterproof tape 800 and a PVC adhesive tape 900. The waterproof tape 800 is wrapped around the outside of the sealing tape 500 to further improve the waterproof performance, while the PVC adhesive tape 900 is wrapped around the outside of the waterproof tape 800. On the one hand, this makes the waterproof tape 800 more securely fixed, and on the other hand, the PVC adhesive tape 900 can withstand the corrosion of the external environment and improve its service life.

[0056] In one specific embodiment of this utility model, referring to Figure 1 and Figure 2 As shown, the high-voltage cable copper shell external wrapping waterproof intermediate joint includes: joint body, waterproof structure, first sealant 600, vent pipe 700, waterproof tape 800 and PVC adhesive tape 900.

[0057] Among them, a copper shell 100 is provided on the outer side of the connector body;

[0058] The waterproof structure includes a mesh belt 200, a mesh sleeve 300, waterproof adhesive 400, and sealing tape 500. The mesh belt 200 is made of plastic and is wrapped around the outside of the copper shell 100 in six layers with a semi-overlapping method. The mesh sleeve 300 is made of plastic and is fitted over the outside of the mesh belt 200. The mesh size of the mesh sleeve 300 is larger than that of the mesh belt 200, and two layers of the mesh sleeve 300 are fitted. The waterproof adhesive 400 is cured within the mesh of the mesh belt 200 and the mesh of the mesh sleeve 300. The sealing tape 500 is transparent and is wrapped around the outside of the mesh sleeve 300 in five layers with a semi-overlapping method. Multiple injection ports are formed on the sealing tape 500, and the outside of the injection ports is covered with a second sealing putty to seal them.

[0059] Two first sealing putty 600s are provided, and the two first sealing putty 600s are respectively wrapped around the two ends of the waterproof structure to seal the two ends of the waterproof structure.

[0060] Two sets of exhaust pipes 700 are provided, corresponding to two first sealing putty 600 respectively. The exhaust pipe 700 has a first end and a second end. The first end of the exhaust pipe 700 passes through the first sealing putty 600 and extends to the mesh belt 200. The second end of the exhaust pipe 700 is located outside the first sealing putty 600 and is partially inserted into the first sealing putty 600 so as to seal the second end of the exhaust pipe 700 through the first sealing putty 600.

[0061] Waterproof tape 800 is wrapped around the outside of sealing tape 500, and two layers are wrapped in a half-overlapping manner; PVC adhesive tape 900 is wrapped around the outside of waterproof tape 800, and one layer is wrapped around it.

[0062] The manufacturing method of the waterproof intermediate joint with copper shell wrapping and glue injection for high-voltage cables in the above embodiments is as follows:

[0063] Step 1: Clean the surface of the copper shell 100, then wrap six layers of mesh belt 200 around the surface of the copper shell 100 in a semi-overlapping manner, and put two layers of mesh sleeve 300 on the outside of the mesh belt 200.

[0064] Step 2: Place multiple injection valves along the length of the copper shell 100 on the outside of the mesh sleeve 300. Then, wrap five layers of sealing tape 500 around the outer mesh sleeve 300 from beginning to end in a semi-overlapping manner. The sealing tape 500 seals the outside of the mesh sleeve 300 while simultaneously fixing the injection valves. The connection point between the sealing tape 500 and the injection valve is the injection port, which can be considered as the injection valve being inserted into the injection port. See [reference needed] for details. Figure 4 ;

[0065] Step 3: Wrap the first sealant 600 around both ends of the sealing tape 500 to seal the ends of the sealing tape 500, the mesh sleeve 300 and the mesh belt 200, and prevent the glue from seeping out from the ends during subsequent glue pouring.

[0066] Step 4: Insert vent pipes 700 at both ends of the first sealant 600. The first end of the vent pipe 700 should pass through the first sealant 600 and extend to the mesh belt 200, while the second end of the vent pipe 700 should be exposed on the outside of the first sealant 600. This allows gas in the internal filling space to escape smoothly during glue filling, improving filling efficiency and quality. For details, please refer to... Figure 3 , Figure 3 This shows the state of the high-voltage cable copper shell externally wrapped with glue and waterproof intermediate joint when the vent pipe is inserted during the manufacturing process;

[0067] Step 5: Pour the prepared waterproof adhesive 400 into the injection valve, filling the mesh of the mesh sleeve 300 and the mesh belt 200 with the waterproof adhesive 400. During the injection process, start by injecting adhesive from the middle injection valve. After the middle position is filled with adhesive, continue injecting adhesive through the injection valves on both sides in sequence. In addition, to improve efficiency and quality, a vacuum pipe can be installed at a suitable location to remove air from the injection space.

[0068] Step 6: After the glue is filled, remove the glue injection valve. At this time, the glue injection port is exposed. To ensure waterproof performance, cover the outside of the glue injection port with a layer of second sealant. Then, insert the second end of the vent pipe 700 into the first sealant 600 and use the first sealant 600 to seal the vent pipe 700 to prevent moisture from entering the waterproof glue 400 from the vent pipe 700 during subsequent use, thus ensuring waterproof performance.

[0069] Step 7: Wrap two layers of waterproof tape 800 around the outside of the sealing tape 500 from beginning to end in a half-overlapping manner, and then wrap a layer of PVC adhesive tape 900 around the waterproof tape 800. Then wait for the waterproof adhesive 400 to initially cure (approximately two to three hours).

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0071] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A waterproof intermediate joint with external copper shell wrapping and glue injection for high-voltage cables, characterized in that, include: The connector body has a copper shell on its outer side; A waterproof structure, comprising a mesh belt, a mesh sleeve, waterproof adhesive, and sealing tape, wherein the mesh belt is wrapped around the outside of the copper shell, the mesh sleeve is fitted over the outside of the mesh belt, the mesh size of the mesh sleeve is larger than the mesh size of the mesh belt, the waterproof adhesive is cured within the mesh of the mesh belt and the mesh of the mesh sleeve, and the sealing tape is wrapped around the outside of the mesh sleeve. Two first sealant puttyes are respectively located at both ends of the waterproof structure, and are used to seal both ends of the waterproof structure.

2. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 1 for high-voltage cables, characterized in that: The waterproof intermediate joint with external copper shell wrapping and glue injection for high-voltage cables also includes: Two sets of exhaust pipes are provided, each set corresponding to one of the two first sealing sealant. Each exhaust pipe has a first end and a second end, the first end of which passes through the first sealing sealant and extends to the mesh belt.

3. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 2, characterized in that: The second end is located outside the first sealant and partially inserted into the first sealant to seal the second end through the first sealant.

4. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 1, characterized in that: The sealing tape has several filling ports that extend to the inside of the sealing tape.

5. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 4, characterized in that: A second sealing putty is provided on the outside of the sealing tape, and the second sealing putty is used to seal the glue inlet.

6. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 4, characterized in that: The sealing tape is transparent.

7. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 4, characterized in that: The glue-filling port has multiple ports, which are spaced apart along the length of the copper shell.

8. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 1 for high-voltage cables, characterized in that: The waterproof intermediate joint with external copper shell wrapping and glue injection for high-voltage cables also includes: A waterproof tape, which is wrapped around the outside of the sealing tape.

9. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 8, characterized in that: The waterproof intermediate joint with external copper shell wrapping and glue injection for high-voltage cables also includes: PVC adhesive tape, which is wrapped around the outside of the waterproof tape.

10. The waterproof intermediate joint with external copper shell wrapping and glue injection as described in claim 1, characterized in that: Both the mesh belt and the mesh sleeve are made of plastic.

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