A cable gland

Abstract

The utility model discloses a cable pipe orifice waterproof device belongs to cable pipe orifice waterproof device technical field, solves the waterproof adhesive ring or sealing washer of cable pipe orifice waterproof in prior art is not easy to install fast, thereby causes the low installation efficiency, and in the installation process, possibly because improper operation and influence sealing effect. The utility model discloses including the expansion structure of cooperation with the pipeline sealing, the expansion structure is extruded and fixed on the pipeline, the connecting structure of cable through and cooperation with the cable sealing. The utility model discloses be used for cable pipe orifice waterproof.

Description

Technical Field

[0001] A waterproofing device for cable conduit openings is disclosed, which is used for waterproofing cable conduit openings and belongs to the technical field of waterproofing devices for cable conduit openings. Background Technology

[0002] In floating solar power, laying cables connects the photovoltaic modules to inverters, combiner boxes, and other equipment, ensuring safe and reliable electrical connections. Due to the unique environment of the water surface, special attention must be paid to waterproofing and corrosion prevention measures during cable laying and connection.

[0003] In floating solar power, the cable outlet typically refers to the exit point of the cable where it meets the air or is underwater, i.e., the part where the cable transitions from the underwater environment to the air or from the air to the underwater environment, such as where the cable crosses a conduit. Because the cable outlet is the transition area where the cable connects to underwater equipment or vice versa, the unique environment of a floating solar power station necessitates excellent waterproof sealing performance to prevent moisture from seeping into the cable, causing electrical faults or equipment damage. Therefore, the cable outlet material needs to be corrosion-resistant to resist salt, microorganisms, and other factors that may cause corrosion in the water. The cable outlet also needs to secure and protect the cable, ensuring that it is not mechanically damaged when crossing the water surface.

[0004] In existing technologies, waterproof rubber rings or sealing gaskets are typically used to seal the pipe openings when cables pass through conduits to ensure no leakage at the connection between the cable and the conduit. While this method can achieve a certain degree of leakage prevention, the following technical problems still exist: 1. It is not easy to install quickly, resulting in low installation efficiency, and the sealing effect may be affected due to improper operation during the installation process; 2. Poor fixing effect, resulting in poor sealing effect. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof device for cable conduit openings, which solves the problem that the waterproof rubber rings or sealing gaskets used for waterproofing cable conduit openings in the prior art are not easy to install quickly, resulting in low installation efficiency, and the sealing effect may be affected by improper operation during the installation process.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A waterproof cable conduit opening device includes an expansion structure that cooperates with the conduit seal, a connection structure that compresses and fixes the expansion structure to the conduit, allows the cable to pass through, and cooperates with the cable seal. The expansion structure includes a petal-shaped nut and a rubber protective sleeve disposed outside the petal-shaped nut to cooperate with the inner wall and outer side of the pipe; The connection structure includes a T-head, which includes a threaded head that mates with the petal-shaped nut thread and an annular plate on the threaded head. The threaded head and the annular plate are provided with a through hole for the cable to pass through. The annular plate is provided with a rubber pad that mates with the petal-shaped nut located on the outer side of the pipe. At the through hole location on the outer end of the pipe, the annular plate is provided with a plastic heat-sealing structure.

[0007] Furthermore, the annular plate is provided with a rotating hole that cooperates with the rotating tool.

[0008] Furthermore, on one side of the annular plate, an annular groove is provided on the threaded head, and a rubber sleeve connected to the rubber pad is provided in the annular groove.

[0009] Furthermore, the plastic-encapsulated heat-sealing structure includes a through tube with a perforation, and a plastic-encapsulated heat-sealing tube fitted onto the through tube to cooperate with the cable.

[0010] Furthermore, the heat-sealing structure also includes a self-adhesive flexible structure disposed at the end of the conduit to center and position the cable and seal the cable to the conduit.

[0011] Furthermore, the self-adhesive flexible structure includes two semi-annular clips A and two semi-annular clips B that mate with the pipe, mounting holes provided on the semi-annular clips A and B, a self-adhesive flexible rubber A provided between the semi-annular clips A and B, and bolts and nuts passing through the self-adhesive flexible rubber A and mate with the mounting holes on the semi-annular clips A and B.

[0012] Furthermore, the self-adhesive flexible structure also includes two semi-annular clips C disposed on one side of the semi-annular clip B, mounting holes disposed on the semi-annular clips C for engagement with bolts and nuts, and a self-adhesive flexible rubber B for bolts to pass through is disposed between the semi-annular clips C and the semi-annular clips B. The self-adhesive flexible rubber B and the semi-annular clips C are located outside the tube and engage with the heat-sealed plastic tube.

[0013] Furthermore, the diameters of the semi-annular clip C and the self-adhesive flexible rubber B are smaller than the diameters of the semi-annular clip A, the semi-annular clip B, and the self-adhesive flexible rubber A.

[0014] Compared with the prior art, the advantages of this utility model are: I. This utility model involves inserting an expansion structure into a pipe, with one end positioned outside the pipe and in contact with the pipe end. A T-shaped head is then inserted into the expansion structure within the pipe, causing the rubber pad on the T-shaped head to contact a petal-shaped nut located outside the pipe. Rotating the T-shaped head engages with the threads of the petal-shaped nut, squeezing the petal-shaped nut on one side of the pipe towards the outside. The compressed petal-shaped nut then abuts against the inner wall of the pipe, thus pressing the rubber protective sleeve against the inner wall of the pipe. This quickly seals and fixes the expansion structure to the pipe, and the connecting structure is also sealed and fixed to the expansion structure. After the cable is inserted into the perforation, a heat-sealing structure is used to seal the perforation and the cable. This rapid waterproof installation and fixing of the cable conduit not only provides excellent fixing but also improves installation efficiency and effectively ensures the sealing effect of the pipe. 2. The present invention provides a rotating hole on the annular plate to facilitate the use of a rotating tool to rotate the T-head in the connection structure to cooperate with the expansion structure; Third, this utility model provides an annular groove on the threaded head and a rubber sleeve on the annular groove. The purpose is to seal the gap between the expansion structure and the connection structure by the rubber sleeve when the rubber gasket fails to achieve a sealing effect, so as to prevent water from seeping into the pipe. IV. The plastic-sealed heat-sealing structure in this utility model uses a tube and a plastic-sealed heat-sealing tube to cooperate. After the plastic-sealed heat-sealing tube is heated and tightened, it is easy to seal the gap between the tube and the cable, so as to achieve a seal between the cable and the tube and prevent water leakage. V. In this utility model, after the cable is installed on the conduit, the self-adhesive flexible rubber A in the self-adhesive flexible structure first seals the cable and the conduit, and places the cable in the middle of the conduit. Then, it cooperates with the plastic-sealed heat-sealing tube to achieve a double seal between the conduit and the cable. It also effectively avoids the situation where the gap between the conduit and the cable is too large, causing the plastic-sealed heat-sealing tube to shrink due to heat and fail to seal the conduit and the cable. VI. This utility model uses a plastic-sealed heat-sealing tube and self-adhesive flexible rubber B to achieve a better sealing effect at the end of the tube. At the same time, the diameters of the self-adhesive flexible rubber B and the semi-annular clip C are limited to be smaller than those of the semi-annular clip A, so that the plastic-sealed heat-sealing tube gradually tightens at the end of the tube when heated, which effectively avoids the problem that the plastic-sealed heat-sealing tube cannot seal the end of the tube due to excessive spacing between the tube and the cable when heated. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the unfolded structure; Figure 3 This is a cross-sectional view of the expansion structure in this utility model; Figure 4 This is a partial cross-sectional view of the connecting structure in this utility model; Figure 5 This is a schematic diagram of the self-adhesive flexible structure in this utility model; In the diagram: 1-Expansion structure, 2-Connection structure, 3-Cable, 4-Petal-shaped nut, 5-Rubber protective sleeve, 6-T-head, 7-Threaded head, 8-Annular plate, 9-Perforation, 10-Rubber pad, 11-Rotating hole, 12-Annular groove, 13-Rubber sleeve, 14-Pipe, 15-Plastic heat-sealing tube, 16-Self-adhesive flexible structure, 17-Semi-annular clip A, 18-Semi-annular clip B, 19-Mounting hole, 20-Self-adhesive flexible rubber A, 21-Bolt, 22-Nut, 23-Semi-annular clip C, 24-Self-adhesive flexible rubber B. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, 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, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0021] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0024] Example 1

[0025] To address the issue that existing technologies for waterproofing cable conduit openings often result in slow installation efficiency due to the difficulty in quickly installing waterproof gaskets or sealing rings, and the potential for improper operation during installation to compromise the sealing effect, such as... Figure 1-5 As shown, a waterproof cable conduit opening device is provided, including an expansion structure 1 that seals with the conduit, and a connecting structure 2 that compresses and fixes the expansion structure 1 to the conduit, allows the cable to pass through, and seals with the cable 3. The expansion structure 1 includes a petal-shaped nut 4 and a rubber protective sleeve 5 disposed outside the petal-shaped nut 4 that mates with the inner wall and outer side of the conduit. The connecting structure 2 includes a T-head 6, which includes a threaded head 7 that mates with the threaded petal-shaped nut 4 and an annular plate 8 disposed on the threaded head 7. The threaded head 7 and the annular plate 8 are provided with through holes 9 for the cable 3 to pass through. The annular plate 8 is provided with a rubber pad 10 that mates with the petal-shaped nut 4 located on the outer side of the conduit. At the position of the through hole 9 located on the outer end of the conduit, the annular plate 8 is provided with a heat-sealing structure.

[0026] In practice, in floating photovoltaic systems, when cables need to pass through a conduit, the expansion structure 1 is first inserted into the end of the conduit, with one end positioned outside the conduit and against the port, while the other threaded end is placed inside the conduit. The threaded head 7 is then inserted into the petal-shaped nut 4. At this point, the T-head 6 is rotated to engage with the threaded petal-shaped nut 4 inside the conduit. When the threads engage, the T-head 6 screws into the conduit, while the petal-shaped nut 4 on the inside of the conduit moves outward, compressing the petals and increasing their outward spacing to secure it against the inner wall of the conduit. Simultaneously, the sealing sleeve is pressed against the inner wall of the conduit. After fixing, the rubber gasket 10, annular plate 8, and petal-shaped nut 4 work together to seal. The cable is then passed through the perforation 9 through the conduit, and the perforation 9 is sealed using a heat-sealing structure, thus achieving waterproofing of the cable conduit opening. This embodiment involves inserting an expansion structure into a pipe, with one end positioned outside the pipe and fitting against the pipe end. A T-head is then inserted into the expansion structure within the pipe, causing the rubber pad on the T-head to contact a petal-shaped nut located outside the pipe. Rotating the T-head engages with the threads of the petal-shaped nut, compressing the petal-shaped nut on one side of the pipe towards the outside. The compressed petal-shaped nut then abuts against the inner wall of the pipe, thus pressing the rubber protective sleeve against the inner wall of the pipe. This quickly seals and fixes the expansion structure to the pipe. After the cable is inserted into the perforation, a heat-sealing structure is used to seal the perforation and cable. This rapid waterproof installation and fixation of the cable conduit not only provides excellent fixation but also improves installation efficiency and effectively ensures the pipe's sealing performance.

[0027] Of course, in practice, the expansion structure 1 can also be initially threaded into the T-head and then inserted into the pipe simultaneously. At this time, the rubber pad can be in contact with the petal-shaped nut or not. When they are in contact, rotating the T-head will not cause the T-head to screw into the pipe. Otherwise, it is necessary to rotate the T-head to squeeze the petal-shaped nut to compress and expand it and press it against the inner wall of the pipe for fixation.

[0028] Example 2

[0029] Based on Embodiment 1, the annular plate 8 is provided with a rotating hole 11 for cooperating with a rotating tool. There may be at least one rotating hole 11, or two, depending on the rotating tool used. The purpose of providing the rotating hole on the annular plate is to facilitate the rotation of the T-head in the connecting structure to cooperate with the expansion structure using a rotating tool.

[0030] Example 3

[0031] Based on Embodiment 1, an annular groove 12 is provided on the threaded head 7 on one side of the annular plate 8, and a rubber sleeve 13 connected to the rubber gasket 10 is provided in the annular groove 12. The purpose of providing an annular groove on the threaded head and a rubber sleeve on the annular groove is to prevent water from seeping into the pipe by sealing the gap between the expansion structure and the connecting structure when the rubber gasket fails to provide a sealing effect.

[0032] Example 4

[0033] Based on Embodiment 1, the heat-sealing structure includes a through-tube 14 located at the perforation 9 on one side of the outer end of the pipe, and a heat-sealing tube 15 fitted onto the through-tube 14 to mate with the cable 3. After the heat-sealing tube 15 is fitted onto the through-tube 14, the cable passes through the through-tube 14, the heat-sealing tube 15, and the perforation 9 through the pipe. The heat-sealing tube 15 is then heated by fire or other heating methods, causing it to shrink onto the through-tube 14 and the cable. The heat-sealing structure, through the mating of the through-tube 14 and the heat-sealing tube 15, facilitates sealing the gap between the through-tube 14 and the cable 3 after the heat-sealing tube 15 shrinks due to heat, thereby achieving a seal between the cable and the through-tube and preventing water leakage.

[0034] Example 5

[0035] Based on Embodiment 4, the heat-sealing structure further includes a self-adhesive flexible structure 16 disposed at the end of the conduit 14 to center and seal the cable 3 to the conduit 14. The self-adhesive flexible structure 16 includes two semi-annular clips A17 and B18 that mate with the conduit, mounting holes 19 on the semi-annular clips A17 and B18, a self-adhesive flexible rubber A20 disposed between the semi-annular clips A17 and B18, and bolts 21 and nuts 22 passing through the self-adhesive flexible rubber A20 and mate with the mounting holes 19 on the semi-annular clips A17 and B18. In practice, after the cable is installed, the self-adhesive clamping structure formed by the two semi-annular clips A17, B18, and A20 in the self-adhesive flexible structure 16 is inserted into the conduit to center and seal the cable, and to seal it in conjunction with the conduit 14. In this embodiment, after the cable is threaded through the conduit, the self-adhesive flexible rubber A in the self-adhesive flexible structure first seals the cable and the conduit, positioning the cable in the middle of the conduit. Then, in conjunction with the heat-sealing plastic tube, a double seal is achieved between the conduit and the cable. This also effectively prevents the heat-sealing plastic tube from shrinking due to heat and failing to seal the conduit and cable if the distance between the conduit and the cable is too large. Depending on the implementation, the heat-sealing plastic tube 15 can be first fitted onto the conduit 14, or it can be first fitted onto the cable, and then fitted onto the conduit 14 after the self-adhesive flexible rubber A20 is installed.

[0036] Example 6

[0037] Based on embodiment 5, the self-adhesive flexible structure 16 further includes two semi-annular clips C23 disposed on one side of the semi-annular clip B18, mounting holes 19 disposed on the semi-annular clips C23 to mate with bolts 21 and nuts 22, and a self-adhesive flexible rubber B24 for accommodating bolts 21 to pass through is disposed between the semi-annular clips C23 and B18. The self-adhesive flexible rubber B24 and the semi-annular clips C23 are located outside the tube 14 and mate with the heat-sealed plastic tube 15. After the self-adhesive flexible structure 16 is installed on the tube 14, the exposed part is the self-adhesive flexible rubber B24 and the semi-annular clips C23, which can be bonded and sealed with the self-adhesive flexible rubber B24 after the heat-sealed plastic tube 15 shrinks due to heat. The use of the heat-sealed plastic tube and the self-adhesive flexible rubber B24 results in a better sealing effect at the end of the tube.

[0038] The diameters of the semi-annular clip C23 and the self-adhesive flexible rubber B24 are smaller than the diameters of the semi-annular clips A17, B18, and A20. Limiting the diameters of the self-adhesive flexible rubber B and the semi-annular clip C to be smaller than those of the semi-annular clip A, etc., allows the heat-sealed tube to gradually tighten at the end of the tube when heated, effectively preventing the heat-sealed tube from becoming too large a gap between the tube and the cable, thus ensuring a proper seal at the end of the tube.

Claims

1. A waterproof device for cable conduit openings, characterized in that: Includes an expansion structure (1) that cooperates with the pipe seal, and a connection structure (2) that compresses and fixes the expansion structure (1) to the pipe, allows the cable to pass through, and cooperates with the cable (3) in a sealed manner. The expansion structure (1) includes a petal-shaped nut (4) and a rubber protective sleeve (5) disposed outside the petal-shaped nut (4) to cooperate with the inner wall and outer side of the pipe. The connection structure (2) includes a T-head (6), which includes a threaded head (7) that mates with the thread of the petal-shaped nut (4) and an annular plate (8) on the threaded head (7). The threaded head (7) and the annular plate (8) are provided with through holes (9) for the cable (3) to pass through. The annular plate (8) is provided with a rubber pad (10) that mates with the petal-shaped nut (4) located on the outside of the pipe. At the position of the through hole (9) on the outside of the pipe, the annular plate (8) is provided with a plastic heat-sealing structure.

2. The waterproof device for cable conduit openings according to claim 1, characterized in that: The annular plate (8) is provided with a rotating hole (11) that cooperates with the rotating tool.

3. The waterproofing device for cable conduit openings according to claim 1, characterized in that: Located on one side of the annular plate (8), an annular groove (12) is provided on the threaded head (7), and a rubber sleeve (13) connected to the rubber pad (10) is provided in the annular groove (12).

4. A waterproof device for cable conduit openings according to claim 1, characterized in that: The plastic-sealed heat-sealing structure includes a through-tube (14) set on an annular plate (8) at the through-hole (9) on one side of the outer end of the pipe, and a plastic-sealed heat-sealing tube (15) fitted on the through-tube (14) to cooperate with the cable (3).

5. A waterproofing device for cable conduit openings according to claim 4, characterized in that: The heat-sealing structure also includes a self-adhesive flexible structure (16) provided at the end of the conduit (14) to center and seal the cable (3) and the conduit (14).

6. A waterproof device for cable conduit openings according to claim 5, characterized in that: The self-adhesive flexible structure (16) includes two semi-annular clips A (17) and two semi-annular clips B (18) that cooperate with the pipe, mounting holes (19) provided on the semi-annular clips A (17) and B (18), a self-adhesive flexible rubber A (20) provided between the semi-annular clips A (17) and B (18), and bolts (21) and nuts (22) that pass through the self-adhesive flexible rubber A (20) and cooperate with the mounting holes (19) on the semi-annular clips A (17) and B (18).

7. A waterproofing device for cable conduit openings according to claim 6, characterized in that: The self-adhesive flexible structure (16) also includes two semi-annular clips C (23) disposed on one side of the semi-annular clip B (18), mounting holes (19) disposed on the semi-annular clip C (23) to cooperate with bolts (21) and nuts (22), and a self-adhesive flexible rubber B (24) for bolts (21) to pass through is disposed between the semi-annular clip C (23) and the semi-annular clip B (18). The self-adhesive flexible rubber B (24) and the semi-annular clip C (23) are located outside the tube (14) and cooperate with the heat-sealed tube (15).

8. A waterproof device for cable conduit openings according to claim 7, characterized in that: The diameters of the semi-annular clip C (23) and the self-adhesive flexible rubber B (24) are smaller than the diameters of the semi-annular clip A (17), the semi-annular clip B (18), and the self-adhesive flexible rubber A (20).

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