Waterproof protection device for cable joint

Abstract

The utility model discloses a cable joint waterproof protection device, which belongs to the technical field of cable joint waterproof protection, and is characterized in that the middle section of the inner wall of a joint pipe is provided with an annular sinking groove, an expansion air bag is connected in the annular sinking groove, the expansion air bag and the annular sinking groove are filled with filling protection balls, and the expansion of the expansion air bag is realized through the filling protection balls; the cable in the joint pipe is further extruded to realize internal waterproof protection; a cable chuck is arranged at the front end of the connector pipe, a plurality of notches are formed in the front end of the cable chuck, and sealing rings are arranged at the positions of the cable chuck and the notches. The protection ball fills the annular sinking groove and makes contact with the expansion air bag. The air bag expands under pressure and extrudes the cable to form a tight waterproof layer, thereby ensuring the safety of the cable joint and preventing moisture and harmful substances from invading. The U-shaped design of the expansion air bag improves the expansion efficiency, optimizes the space, and enables the device to be more compact and efficient. The design reduces the size and weight, does not sacrifice the waterproof effect, and facilitates the installation and use of the cable joint.

Description

Technical Field

[0001] This utility model relates to the field of waterproof protection technology for cable joints, and in particular to a waterproof protection device for cable joints. Background Technology

[0002] Waterproof cable joint protection devices mainly include waterproof cable joints and their supporting components. These devices play a crucial role in many fields. A waterproof cable joint is a specially designed connection device that not only connects cables but also possesses excellent waterproof performance. Through special sealing design and the use of high-quality waterproof materials, waterproof cable joints can remain dry for extended periods in humid environments, preventing water infiltration that could lead to circuit failures or equipment damage. The optimized structural design simplifies the installation process, reduces tool requirements, improves work efficiency, and lowers the probability of errors.

[0003] In practical use, the waterproof protection device for cable joints can be compromised by moisture infiltration over time. Once moisture, in gaseous or liquid form, penetrates the device, it not only adheres to the surface of the insulation but also slowly seeps into the interior, causing a decrease in resistivity, reduced electrical strength, and ultimately, insulation failure. This can lead to leakage, short circuits, and other faults in the cable joint during operation, thus affecting the stability and safety of the entire power system.

[0004] Moisture that seeps into the waterproofing protection device of a cable joint can cause corrosion and adhesion to the connector's connection structure (such as threads and clips), making subsequent disassembly difficult or even impossible. Furthermore, long-term water seepage and absorption can cause the insulator to expand and deform, resulting in displacement and tolerance changes, further exacerbating corrosion and adhesion problems.

[0005] Moisture infiltration negatively impacts the lifespan of waterproof protection devices for cable joints. Prolonged moisture erosion can cause the materials of the protection device to age, deform, or even crack, thus losing its waterproofing function. This not only reduces the lifespan of the protection device but also poses a threat to the safe and stable operation of the power system. Utility Model Content

[0006] The main objective of this invention is to provide a waterproof protection device for cable joints, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A waterproof protection device for cable joints includes a joint tube, a fixing head, and a sealing plug, wherein the fixing head is located in the middle section of the joint tube, and the outer wall of the joint tube is threaded.

[0009] The inner wall of the connector tube has an annular groove in the middle section, and an expansion air bladder is connected in the groove. The expansion air bladder and the annular groove are filled with a protective ball. The expansion air bladder expands by filling the protective ball, thereby squeezing the cable inside the connector tube and achieving internal waterproof protection.

[0010] The front end of the connector tube is provided with a cable clamp, and the front end of the cable clamp has multiple notches. The cable clamp and the notches are provided with sealing rings. The front end of the connector tube is connected to a fastening sleeve. The fastening sleeve rotates to tighten the sealing rings, thereby achieving waterproof protection at that point.

[0011] As a preferred embodiment of this utility model, the corner of the annular sink is designed in an arc shape, the annular sink extends into the interior of the fixing head, the side wall of the fixing head is provided with a through hole, the through hole communicates with the annular sink, the opening of the through hole is provided with a thread, and the inner wall of the through hole is provided with a sealing ring.

[0012] As a preferred embodiment of this utility model, the cross-section of the sealing plug is designed in the shape of a "T". A sealing ring is fitted on the sealing plug. The sealing plug is inserted into the fixing head through a through hole and connected to the fixing head by a thread. A cross opening is formed at the outer end of the sealing plug.

[0013] As a preferred embodiment of this utility model, a fastening nut and a sealing washer are fitted at the rear end of the connector tube, and rotating the fastening nut causes the sealing washer to press against the fixing head.

[0014] As a preferred embodiment of this utility model, the fixing head and the connector tube are designed as an integral part, the cable clamp is a plastic clamp, the cable clamp is heat-fused and fixed on the connector tube, and multiple notches are distributed in a ring at the opening of the cable clamp.

[0015] As a preferred embodiment of this utility model, the filling protective ball is made of biocompatible SAP material, the cross-section of the inflatable airbag is U-shaped, and the inflatable airbag is fixed to the fixing head and connector tube by adhesive.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By filling the annular groove with a protective ball and contacting the expansion bladder, the expansion bladder effectively expands and compresses the cable when pressure is applied or triggered, thus forming a tight waterproof layer inside the joint tube. This design ensures that the cable is adequately protected at the joint, preventing the intrusion of moisture or other harmful substances, and improving the safety and reliability of the cable in harsh environments.

[0018] The U-shaped design of the inflatable airbag not only improves its inflation efficiency but also optimizes space utilization, making the overall device more compact and efficient. This design helps reduce the size and weight of the device without compromising its waterproof protection, and facilitates the installation and use of cable connectors.

[0019] The design of the connector tube, along with its close integration with components such as the expansion bladder, protective filling ball, and fixing head, constitutes a complete and reliable waterproof protection system. This system not only boasts excellent waterproof performance but also good sealing and stability, effectively coping with various harsh environments and challenges, ensuring the long-term safe operation of the cable joint. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the overall structure of this utility model;

[0022] Figure 3 This is an exploded view of the overall structure of this utility model;

[0023] Figure 4 The diagram shows the connector tube, fixing head, and inflatable airbag of this utility model.

[0024] Figure 5 This is a cross-sectional view of the connector tube, fixing head, expansion airbag, and filling protective ball of this utility model.

[0025] In the diagram: 1. Connector tube; 2. Fixing head; 3. Cable clamp; 4. Notch; 5. Annular groove; 6. Inflatable air bladder; 7. Filler protective ball; 8. Sealing plug head; 9. Fastening nut; 10. Sealing washer; 11. Fastening sleeve; 12. Sealing ring. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figures 1-5 As shown, a waterproof protection device for a cable joint includes a joint tube 1 and a fixing head 2. The fixing head 2 is designed to be installed in the middle section of the joint tube 1, and the outer wall of the joint tube 1 is designed with threads to facilitate connection and fixation with other components.

[0028] An annular groove 5 is specially formed in the middle section of the inner wall of the connector tube 1. An expansion air bladder 6 is connected inside the groove 5. The expansion air bladder 6 and the annular groove 5 are filled with protective filling balls 7. By filling with protective filling balls 7, the expansion air bladder 6 can expand, thereby squeezing the cable inside the connector tube 1, thus achieving internal waterproof protection and ensuring the safe use of the cable in harsh environments.

[0029] The front end of the connector tube 1 is designed with a cable clamp 3, and the front end of the cable clamp 3 has multiple notches 4. Both the cable clamp 3 and the notches 4 are equipped with sealing rings 12 to ensure the sealing of the connection between the cable and the connector tube 1. A fastening sleeve 11 is also connected to the front end of the connector tube 1. By rotating the fastening sleeve 11, the sealing rings 12 can be tightened, thereby achieving waterproof protection at that point and ensuring the sealing of the cable joint.

[0030] The corners of the annular groove 5 are designed with an arc shape to reduce stress concentration and improve structural reliability. The annular groove 5 extends into the interior of the fixing head 2. A through hole is provided on the side wall of the fixing head 2, which communicates with the annular groove 5 to facilitate the expansion of the inflatable airbag 6. The opening of the through hole is threaded, and a sealing ring is provided on the inner wall of the through hole to ensure the sealing of the through hole.

[0031] The sealing plug 8 has a "T"-shaped cross-section and a sealing ring is fitted on it to ensure a tight seal at the connection point with the fixing head 2. The sealing plug 8 is inserted into the through hole of the fixing head 2 and connected to the fixing head 2 by threads. A cross-shaped opening is provided at the outer end of the sealing plug 8 for easy operation.

[0032] A fastening nut 9 and a sealing washer 10 are fitted at the rear end of the connector tube 1. Rotating the fastening nut 9 can cause the sealing washer 10 to press against the fixed head 2 to ensure the sealing at the connection between the connector tube 1 and the fixed head 2.

[0033] The fixing head 2 and the connector tube 1 are designed as a single unit to improve structural stability and reliability. The cable clamp 3 is a plastic clamp and is fixed to the connector tube 1 by heat fusion to ensure a firm connection. Multiple notches 4 are distributed in a ring at the opening of the cable clamp 3 to facilitate cable installation and fixation.

[0034] The protective filling ball 7 is made of biocompatible SAP material, which has good water absorption and expansion properties, effectively protecting the cable. The expansion bladder 6 has a U-shaped cross-section, which effectively utilizes space and improves the expansion efficiency of the expansion bladder 6. The expansion bladder 6 is fixed to the fixing head 2 and the connector tube 1 with adhesive to ensure its stability during use.

[0035] Prepare the cables to be connected, ensuring that the outer sheath of the cable ends has been stripped to expose the conductor. Insert the cable into the front end of the cable clamp 3. Tighten the sealing ring 12 by rotating the tightening sleeve 11, ensuring a seal between the cable and the connector tube 1. Fill the annular groove 5 in the middle of the inner wall of the connector tube 1 with a biocompatible SAP material filler ball 7. The purpose of the filler ball 7 is to compress the cable when the inflation bladder 6 inflates, providing internal waterproof protection.

[0036] Place the inflatable airbag 6 within the annular recess 5, ensuring it is in contact with the filling protective ball 7. The inflatable airbag 6 has a U-shaped cross-section to improve inflation efficiency. Install the fixing head 2 at the middle section of the connector tube 1, ensuring a secure connection. The fixing head 2 and connector tube 1 are designed as a single unit to enhance structural stability and reliability. Secure the fastening nut 9 and sealing washer 10 at the rear end of the connector tube 1.

[0037] Rotate the tightening nut 9 to press the sealing washer 10 against the fixing head 2, ensuring a tight seal at the connection between the connector tube 1 and the fixing head 2. Insert the sealing plug 8 into the through hole of the fixing head 2 and connect it to the fixing head 2 via threads. The sealing plug 8 has a "T"-shaped cross-section and is fitted with a sealing ring to ensure a tight seal at its connection with the fixing head 2. A cross-shaped opening is provided at the outer end of the sealing plug 8 for easy operation. After confirming that all components are correctly installed and sealed, check the integrity and sealing of the device. After the cable connector waterproof protection device is installed, ensure that it can provide effective waterproof protection in harsh environments to ensure the safe use of the cable.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" (number one, number two), are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0039] 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 illustrative of the principles of this 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waterproof protection device for a cable joint, comprising a joint tube (1), a fixing head (2), and a sealing plug (8), wherein the fixing head (2) is located in the middle section of the joint tube (1), and the outer wall of the joint tube (1) is provided with threads, characterized in that: The inner wall of the connector tube (1) is provided with an annular groove (5) in the middle section, and an expansion airbag (6) is connected in the groove of the annular groove (5). The expansion airbag (6) and the annular groove (5) are filled with a filling protective ball (7). The expansion airbag (6) is expanded by filling the protective ball (7), thereby squeezing the cable inside the connector tube (1) to achieve internal waterproof protection. The front end of the connector tube (1) is provided with a cable clamp (3), and the front end of the cable clamp (3) is provided with multiple notches (4). The cable clamp (3) and the notches (4) are provided with sealing rings (12). The front end of the connector tube (1) is connected to a fastening sleeve (11). The fastening sleeve (11) rotates to tighten the sealing ring (12), thereby achieving waterproof protection at that location.

2. The waterproof protection device for cable joints according to claim 1, characterized in that: The corner of the annular sink (5) is arc-shaped and extends into the interior of the fixing head (2). The side wall of the fixing head (2) is provided with a through hole, which is connected to the annular sink (5). The opening of the through hole is provided with a thread, and the inner wall of the through hole is provided with a sealing ring.

3. A waterproof protection device for cable joints according to claim 2, characterized in that: The sealing plug (8) has a "T" shaped cross-section. A sealing ring is fitted on the sealing plug (8). The sealing plug (8) is inserted into the fixing head (2) and has a through hole. It is connected to the fixing head (2) by threads. The outer end of the sealing plug (8) has a cross opening.

4. A waterproof protection device for cable joints according to claim 3, characterized in that: The rear end of the connector tube (1) is fitted with a fastening nut (9) and a sealing washer (10). Rotating the fastening nut (9) causes the sealing washer (10) to press against the fixing head (2).

5. A waterproof protection device for cable joints according to claim 4, characterized in that: The fixing head (2) and the connector tube (1) are designed as a single unit. The cable clamp (3) is a plastic clamp. The cable clamp (3) is heat-fused and fixed on the connector tube (1). Multiple notches (4) are distributed in a ring at the opening of the cable clamp (3).

6. A waterproof protection device for cable joints according to claim 5, characterized in that: The filling protective ball (7) is made of biocompatible SAP material. The cross-section of the inflatable airbag (6) is U-shaped. The inflatable airbag (6) is fixed to the fixing head (2) and the connector tube (1) by adhesive.

Images