Double-seal connector structure for waterproof cable

Abstract

The utility model relates to cable sealing joint structure technical field, concretely relates to waterproof cable with double sealing type joint structure, including left and right two mutually symmetrical protective cover, both protective cover mutually close side all are fixedly installed with flange plate, and the fixed between two flange plates through multiple fastening bolts, and the embedded between two flange plates is flange sealing ring, the inside of protective cover is provided with central passage, and the end of protective cover is fixedly installed with rubber sleeve, and the waterproof cable is passed in rubber sleeve, and the rubber sleeve is provided with rubber wrapping sleeve, and the rubber wrapping sleeve is embedded in rubber sleeve, and the outside of rubber sleeve is provided with hoop, and the inner wall of central passage is embedded with water-swelling rubber ring, the utility model has good sealing effect, reduces cable fault maintenance frequency.

Description

Technical Field

[0001] This utility model relates to the technical field of cable sealing joint structure, specifically to a double-sealed joint structure for waterproof cables. Background Technology

[0002] In fields such as building hydropower, new energy, and telecommunications engineering, waterproof cables, as the core carriers of signal and power transmission, are often exposed to complex environments such as dampness, water accumulation, and groundwater seepage. The sealing performance of their joints directly determines the overall waterproof effect and service life of the cable. If the joint seal fails, moisture infiltration can lead to cable short circuits, signal interference, and even equipment damage, causing safety hazards and economic losses.

[0003] Existing waterproof cable connectors mostly rely on a single layer of rubber sleeve or sealing ring for sealing, which can only be used for short periods in dry or slightly humid environments. When the environment is too humid, the single sealing layer is prone to aging and deformation, and the gap between the seals widens, allowing moisture to easily seep in along the gap between the cable and the connector, leading to seal failure. Especially in environments with large temperature differences, the thermal expansion and contraction of the sealing material further exacerbates the degradation of sealing performance, failing to meet long-term, high-reliability waterproofing requirements and resulting in frequent cable failures and repairs. Therefore, we propose a double-sealed connector structure for waterproof cables. Utility Model Content

[0004] The purpose of this invention is to provide a double-sealed connector structure for waterproof cables to solve the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The waterproof cable uses a double-sealed connector structure, including two symmetrical protective covers on the left and right sides. Flanges are fixedly installed on the sides of the two protective covers that are close to each other. The two flanges are fixed together by multiple fastening bolts, and a flange sealing ring is embedded between the two flanges. A central channel is provided inside the protective cover. A rubber sleeve is fixedly installed at the end of the protective cover. The waterproof cable passes through the rubber sleeve. A rubber sheath is fitted on the waterproof cable. The rubber sheath is embedded in the rubber sleeve. A clamp is fitted on the outside of the rubber sheath. A water-swellable rubber ring is embedded on the inner wall of the central channel.

[0006] Preferably, a flared sleeve is fixedly installed at the end of the rubber sleeve, and the flared sleeve is trumpet-shaped; This feature allows the waterproof cable to pass more smoothly through the flared sleeve into the rubber sleeve.

[0007] Preferably, the waterproof cable passes through the flared sleeve and the rubber sleeve, and the end of the waterproof cable is wired inside the protective cover.

[0008] Preferably, after the clamp is fixed, the rubber sleeve and the rubber wrapping sleeve are pressed tightly onto the outer surface of the waterproof cable, and the water-swellable rubber ring is fitted onto the waterproof cable; This feature ensures the sealing of the waterproof cable at the clamp location.

[0009] Preferably, a plug-in sealing cylinder is also provided in the central channel, the plug-in sealing cylinder is sleeved on the waterproof cable, and the plug-in sealing cylinder is plugged into the central channel.

[0010] Preferably, a stepped surface is provided on the inner wall of the diameter-changing part of the central channel, and a fixing ring is fixedly installed at the end of the insertion sealing cylinder. The fixing ring is fixedly installed on the stepped surface by multiple fastening screws.

[0011] Preferably, an inner sealing ring is embedded in the inner wall of the plug-in sealing cylinder, and the inner sealing ring is fitted onto the waterproof cable.

[0012] Preferably, the stepped surface is provided with an inner inclined surface, and the front end face of the insertion sealing cylinder is provided with an end inclined surface, and the end inclined surface is inserted into the central channel along the inner inclined surface.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves double sealing protection for the joint through the setting of two protective covers on the left and right sides, the flange and flange sealing ring on the protective covers, and the water-swellable rubber ring on the inner wall of the central channel of the protective cover. The flange is tightened with fastening bolts to press the flange sealing ring, preventing external moisture from seeping in from the joint splice. The water-swellable rubber ring expands and fills the gap after encountering water, further enhancing the waterproof effect, achieving the effect of resisting long-term water accumulation and high water pressure environment, avoiding sealing failure, and reducing the frequency of cable fault repair.

[0014] 2. This utility model achieves a tight fit and convenient installation between the cable and the connector by using a protective cover end rubber sleeve, a rubber wrapping sleeve on the waterproof cable, a clamp on the outside of the rubber sleeve, and a flared sleeve at the end of the rubber sleeve. After the clamp is fixed, the rubber sleeve and the rubber wrapping sleeve are pressed tightly onto the surface of the waterproof cable, eliminating the gap between the fit and further achieving a sealing operation. The flared sleeve guides the cable to pass through smoothly, further achieving the effect of resisting long-term water accumulation and high water pressure environment, avoiding sealing failure, and reducing the frequency of cable failure repair.

[0015] 3. This utility model achieves stability and enhanced sealing of the internal structure of the connector by setting a central channel for inserting a sealing cylinder, a fixing ring and an inner sealing ring on the insert sealing cylinder, and an inner inclined surface of the central channel step surface and an end inclined surface of the insert sealing cylinder. The fixing ring is fixed to the step surface by fastening screws, the inner sealing ring further seals the gap between the cable and the insert sealing cylinder, and the inclined surface ensures a tight insertion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is one of the partial structural schematic diagrams of this utility model; Figure 3 This is the second partial structural schematic diagram of the present utility model; Figure 4 This is the third partial structural schematic diagram of this utility model; The meanings of the labels in the diagram are as follows: 1. Protective cover; 10. Central channel; 11. Flange; 12. Flange sealing ring; 13. Rubber sleeve; 14. Flange sleeve; 15. Clamp; 16. Stepped surface; 17. Inner bevel; 2. Waterproof cable; 20. Rubber sheath; 3. The rubber ring expands when exposed to water; 4. Fixing ring; 40. Insert sealing cylinder; 41. End bevel; 42. Inner sealing ring. Detailed Implementation

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

[0018] Please see Figures 1-4This utility model provides a technical solution: a double-sealed connector structure for waterproof cables, comprising two symmetrical protective covers 1, with flanges 11 fixedly installed on the sides of the two protective covers 1 that are close to each other. The two flanges 11 are fixed together by multiple fastening bolts, and a flange sealing ring 12 is embedded between the two flanges 11. A central channel 10 is provided inside the protective cover 1, and a rubber sleeve 13 is fixedly installed at the end of the protective cover 1. A waterproof cable 2 passes through the rubber sleeve 13, and a rubber wrapping sleeve 20 is fitted on the waterproof cable 2. The rubber wrapping sleeve 20 is embedded in the rubber sleeve 13, and a clamp 15 is fitted on the outside of the rubber sleeve 13. A water-swellable rubber ring 3 is embedded on the inner wall of the central channel 10, so that the two protective covers 1 are spliced ​​and fixed by the flanges 11 and fastening bolts. The flange sealing ring 12 prevents water leakage at the splice. The clamp 15 presses the rubber sleeve 13 and the rubber wrapping sleeve 20 together to form a preliminary seal with the waterproof cable 2. The water-swellable rubber ring 3 expands when it comes into contact with water to fill the gap, forming a multiple seal to prevent water from seeping in and causing cable failure.

[0019] like Figure 1 and Figure 2 As shown, a flared sleeve 14 is fixedly installed at the end of the rubber sleeve 13. The flared sleeve 14 is horn-shaped, so that the waterproof cable 2 can be guided along the horn-shaped inclined surface of the flared sleeve 14 when it is inserted, so that the waterproof cable 2 can be inserted into the rubber sleeve 13 more smoothly and the installation difficulty is reduced.

[0020] In this embodiment, the waterproof cable 2 is inserted through the flared sleeve 14 and the rubber sleeve 13. The end of the waterproof cable 2 is connected inside the protective cover 1, so that the connection operation is completed inside the protective cover 1. The protective cover 1 can provide physical protection for the connection part, prevent the connection point from being exposed to the outside environment and corrode, and ensure the stability and safety of the connection.

[0021] Specifically, after the clamp 15 is fixed, the rubber sleeve 13 and the rubber wrapping sleeve 20 are pressed tightly onto the outer surface of the waterproof cable 2. The water-swellable rubber ring 3 is put on the waterproof cable 2, so that the clamping force of the clamp 15 makes the rubber sleeve 13 and the rubber wrapping sleeve 20 fit tightly against the outer surface of the waterproof cable 2, eliminating gaps and achieving a preliminary seal. The water-swellable rubber ring 3 further seals the gap between the waterproof cable 2 and the central channel 10, providing double protection for the sealing of the clamp 15 and the waterproof cable 2 in the central channel 10.

[0022] Furthermore, a plug-in sealing cylinder 40 is also provided inside the central channel 10. The plug-in sealing cylinder 40 is fitted onto the waterproof cable 2. The plug-in sealing cylinder 40 and the central channel 10 are plugged in and engaged, so that the plug-in sealing cylinder 40 can provide additional protection for the waterproof cable 2 inside the central channel 10. At the same time, the plug-in engagement structure facilitates quick assembly and enhances the structural stability inside the central channel 10.

[0023] In addition, a stepped surface 16 is provided on the inner wall of the variable diameter section of the central channel 10. A fixing ring 4 is fixedly installed at the end of the plug-in sealing cylinder 40. The fixing ring 4 is fixedly installed on the stepped surface 16 by multiple fastening screws, so that the fixing ring 4 is fixed to the stepped surface 16 by means of fastening screws, and the plug-in sealing cylinder 40 is stably limited in the central channel 10, so as to prevent the plug-in sealing cylinder 40 from shifting during use and to ensure stable sealing effect.

[0024] It is worth noting that an inner sealing ring 42 is embedded in the inner wall of the plug-in sealing cylinder 40. The inner sealing ring 42 is fitted onto the waterproof cable 2, so that the inner sealing ring 42 can fill the gap between the inner wall of the plug-in sealing cylinder 40 and the outer surface of the waterproof cable 2, forming an additional sealing layer, further improving the sealing performance between the plug-in sealing cylinder 40 and the waterproof cable 2, and strengthening the overall waterproof performance.

[0025] It is worth noting that the stepped surface 16 is provided with an inner inclined surface 17, and the front end face of the insertion sealing cylinder 40 is provided with an end inclined surface 41. The end inclined surface 41 is inserted into the central channel 10 along the inner inclined surface 17, so that when the insertion sealing cylinder 40 is inserted, the end inclined surface 41 can fit and guide each other with the inner inclined surface 17, ensuring that the insertion sealing cylinder 40 is accurately aligned with the central channel 10, avoiding deviation during insertion, and achieving a smoother and more accurate insertion fit.

[0026] When using the waterproof cable of this utility model with a double-sealed connector structure, the waterproof cable 2 is inserted through the flared sleeve 14 and then through the rubber sleeve 13 into the central channel 10, ensuring that the rubber sleeve 20 on the waterproof cable 2 is embedded in the rubber sleeve 13. Insert the end bevel 41 of the plug-in sealing cylinder 40 along the inner bevel 17 of the step surface 16 of the central channel 10, and fix the retaining ring 4 to the step surface 16 with the fastening screw to complete the installation of the plug-in sealing cylinder 40. Wiring is performed at the protective cover 1, and the connection of the cable is sealed with insulating tape. The left and right protective covers 1 are closed, the flanges 11 are aligned, the flange sealing rings 12 are installed, and then the fastening bolts are used to fix them. The clamps 15 on the outside of the rubber sleeve 13 are tightened, and the rubber sleeve 13 and the rubber wrapping sleeve 20 are pressed tightly onto the surface of the cable. The water-swellable rubber ring 3, the inner sealing ring 42, and the clamps 15 form a multiple seal to protect the wiring from external corrosion.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-sealed connector structure for waterproof cables, characterized in that: The device includes two symmetrical protective covers (1) on the left and right sides. Flanges (11) are fixedly installed on the sides of the two protective covers (1) that are close to each other. The two flanges (11) are fixed together by multiple fastening bolts. A flange sealing ring (12) is embedded between the two flanges (11). A central channel (10) is provided inside the protective cover (1). A rubber sleeve (13) is fixedly installed at the end of the protective cover (1). A waterproof cable (2) passes through the rubber sleeve (13). A rubber sleeve (20) is fitted on the waterproof cable (2). The rubber sleeve (20) is embedded in the rubber sleeve (13). A clamp (15) is fitted on the outside of the rubber sleeve (13). A water-swellable rubber ring (3) is embedded on the inner wall of the central channel (10).

2. The double-sealed connector structure for waterproof cables according to claim 1, characterized in that: The end of the rubber sleeve (13) is fixedly fitted with a flared sleeve (14), which is flared in shape.

3. The double-sealed connector structure for waterproof cables according to claim 2, characterized in that: The waterproof cable (2) is inserted along the flared sleeve (14) and the rubber sleeve (13), and the end of the waterproof cable (2) is wired inside the protective cover (1).

4. The double-sealed connector structure for waterproof cables according to claim 1, characterized in that: After the clamp (15) is fixed, the rubber sleeve (13) and the rubber wrapping sleeve (20) are pressed tightly on the outer surface of the waterproof cable (2), and the water-swellable rubber ring (3) is fitted on the waterproof cable (2).

5. The double-sealed connector structure for waterproof cables according to claim 1, characterized in that: The central channel (10) is also provided with a plug-in sealing cylinder (40), which is fitted onto the waterproof cable (2) and is plugged into the central channel (10).

6. The double-sealed connector structure for waterproof cables according to claim 5, characterized in that: A stepped surface (16) is provided on the inner wall of the variable diameter section of the central channel (10), and a fixing ring (4) is fixedly installed at the end of the plug-in sealing cylinder (40). The fixing ring (4) is fixedly installed on the stepped surface (16) by multiple fastening screws.

7. The double-sealed connector structure for waterproof cables according to claim 6, characterized in that: The inner wall of the plug-in sealing cylinder (40) is fitted with an inner sealing ring (42), which is fitted onto the waterproof cable (2).

8. The double-sealed connector structure for waterproof cables according to claim 7, characterized in that: The step surface (16) is provided with an inner inclined surface (17), and the front end surface of the plug-in sealing cylinder (40) is provided with an end inclined surface (41). The end inclined surface (41) is inserted into the central channel (10) along the inner inclined surface (17).

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