Cable protection tube sealing device

Abstract

The utility model discloses a cable protection tube sealing device, aims at solving the poor connection sealing, the inconvenient assembly and the difficult problem of multisection joint of existing cable protection tube. The device includes the upper protection shell and the lower protection shell of mutual adaptation and engagement, and the pipe cavity containing the cable protection tube is formed by the enclosure of both, and the detachable connection is realized through the clamping structure, and the clamping structure contains the clamping convex of upper protection shell clamping side and the clamping groove of lower protection shell clamping side, the integrated taper hollow plate body sealing connection end is equipped at the both ends of upper and lower protection shell, the same end is spliced into complete annular, and the multilayer sealing ring is arranged between the ends, and the elastic sealing layer is arranged on the inner wall of pipe cavity along the length direction. Upper and lower protection shell adopt elastic material, and the clamping convex has the inside inverted "V" type plate body and the outside cylindrical convex. The device is through the elastic engagement, the multidimensional sealing and the integrated connection end design, and the sealing performance, the assembly convenience and the multisection joint demand are considered, and is suitable for the cable protection tube sealing protection scene.

Description

Technical Field

[0001] This utility model provides a sealing device, and particularly relates to a sealing device for a cable protection pipe. Background Technology

[0002] In cable laying construction, the cable protection pipe sealing device is a key component to ensure the cable operating environment and prevent the intrusion of external water and debris. Its function is to seal and protect the cable protection pipe connection and the gap between the pipe body and the outside.

[0003] Existing cable protection pipe sealing devices mostly adopt integrated or simple split-type sleeve structures. While the integrated structure can guarantee a certain degree of sealing, extensive disassembly and assembly of the cable or protection pipe is required during cable installation and subsequent maintenance and replacement, which is cumbersome and prone to cable damage. The simple split-type sleeve structure relies on external connectors such as bolts and clips for splicing, which not only increases the assembly process, but also makes the connectors prone to corrosion and loosening after long-term use, leading to sealing failure. At the same time, the sealing connection ends of existing devices are mostly of the flat fitting type, lacking targeted sealing reinforcement design. It is difficult to form a continuous and stable sealing environment when adjacent devices are connected. The inner wall of the pipe cavity and the outer wall of the cable protection pipe often have sealing gaps due to loose fit, which cannot effectively prevent water and debris from entering, making it difficult to meet the requirements of long-term stable protection of cables in complex construction scenarios. Utility Model Content

[0004] In order to solve the above problems, this application provides a cable protection pipe sealing device, which solves the problems of cumbersome assembly, unreliable sealing and difficulty in connecting multiple sections of the existing device, and achieves convenient disassembly and assembly and long-term sealing protection.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cable protection pipe sealing device, including an upper protective shell and a lower protective shell that are mutually adapted and engaged, wherein the upper protective shell and the lower protective shell together enclose a cavity for accommodating the cable protection pipe; The upper protective shell and the lower protective shell are respectively provided with a sealing connection end at their respective ends that are far apart from each other. The sealing connection ends at both ends are adapted to each other and are used for the sequential connection of sealing devices of adjacent cable protection pipes. The upper and lower protective shells are provided with a matching snap-fit ​​structure at their snap-fit ​​connection point, which enables the two to be detachably snapped together and forms a sealed tubular structure after snapping together.

[0006] Preferably, the snap-fit ​​structure includes a snap protrusion disposed on the snap-fit ​​edge of the upper protective shell and a snap groove disposed on the snap-fit ​​edge of the lower protective shell and adapted to the snap protrusion, wherein the snap protrusion is embedded in the snap groove to realize the snap-fit ​​connection between the upper and lower protective shells.

[0007] Preferably, both the upper and lower protective shells are made of elastic material, and the latching protrusion includes an inverted "V"-shaped plate on the inner shell of the upper protective shell and a cylindrical protrusion on the outer shell of the upper protective shell; the plate corresponds to the latching groove and the protrusion corresponds to the latching edge.

[0008] Preferably, the sealing connection end is a conical hollow plate structure, and the end face of the upper protective shell sealing connection end and the end face of the lower protective shell sealing connection end are spliced ​​together to form a complete annular end face, and multiple sealing rings are provided between the sealing connection ends.

[0009] Preferably, the inner walls of the cavities of the upper and lower protective shells are provided with elastic sealing layers for fitting against the outer wall of the cable protection pipe. The elastic sealing layers are arranged along the length of the cavity to enhance the sealing between the cavity and the cable protection pipe.

[0010] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art: This device primarily addresses the problems of insufficient sealing performance, inconvenient assembly and disassembly, and difficulties in connecting multiple sections of cable protection pipes. Specifically, it solves these problems through the following methods: It employs an upper and lower protective shell that interlock with each other, achieving a detachable connection via a snap-fit ​​structure. The snap-fit ​​protrusion on the upper protective shell's interlocking edge embeds into the snap-fit ​​groove on the lower protective shell's interlocking edge. Combined with the elastic material properties, this ensures both ease of assembly and improved connection stability. The upper and lower protective shells are integrated into conical hollow plate sealing connection ends. These end-to-end components form a complete ring and are fitted with multiple sealing rings, achieving a tight connection between adjacent devices and solving the sealing problem for multiple sections of protection pipes. Simultaneously, the elastic sealing layer on the inner wall of the pipe cavity adheres to the outer wall of the cable protection pipe, working in conjunction with the sealed cavity structure formed after interlocking. This enhances overall sealing performance from both internal adhesion and external wrapping, effectively preventing moisture and impurities from entering the protection pipe. Ultimately, through the synergistic effect of the structural design, it balances sealing performance, assembly convenience, and the needs of multi-section connections.

[0011] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the installation state of the cable protection pipe sealing device of this utility model; Figure 2 This is an exploded view of the upper and lower protective shells of the cable protection pipe sealing device of this utility model; Figure 3This is a partial enlarged view of the clips and connections of the upper and lower protective shells of the cable protection pipe sealing device of this utility model; Figure 4 This is a schematic cross-sectional view of the upper and lower housings of the cable protection pipe sealing device of this utility model.

[0013] As shown in the figure: 1. Upper protective shell; 2. Lower protective shell; 3. Tube cavity; 4. Sealing connection end; 5. Snap-fit ​​structure; 6. Snap-fit ​​protrusion; 7. Snap-fit ​​edge; 8. Snap-fit ​​groove; 9. Sealing ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0015] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] like Figure 1 and Figure 2 As shown, the core of the cable protection pipe sealing device consists of an upper protective shell 1 and a lower protective shell 2 that fit and engage with each other, forming a cavity 3 to accommodate the cable protection pipe. The upper protective shell 1 and the lower protective shell 2 are detachably engaged via a snap-fit ​​structure 5. This structure includes a snap-fit ​​protrusion 6 on the snap-fit ​​side 7 of the upper protective shell 1 and a matching snap-fit ​​groove 8 on the snap-fit ​​side 7 of the lower protective shell 2. The snap-fit ​​protrusion 6 is inserted into the snap-fit ​​groove 8 to complete the connection, and the cavity 3 is sealed after engagement. Simultaneously, the upper protective shell 1 and the lower protective shell 2 are located at opposite ends and are integrally equipped with corresponding matching sealing connection ends 4 for sequential connection of adjacent devices. This establishes the overall assembly framework and connection logic of the device, enabling the wrapping of the cable protection pipe and the connection of multiple devices through snap-fitting and splicing.

[0018] In this embodiment, the upper protective shell 1 and the lower protective shell 2 are symmetrical semi-shell structures, and their locking edges 7 fit together. The locking protrusions 6 on the locking edge 7 of the upper protective shell 1 and the locking grooves 8 on the locking edge 7 of the lower protective shell 2 are in one-to-one correspondence. After the locking protrusions 6 are embedded into the locking grooves 8, the upper protective shell 1 and the lower protective shell 2 are precisely connected and enclosed to form a complete cavity 3. The inner wall of the cavity 3 is adapted and fitted to the outer wall of the cable protection pipe. The two ends of the upper protective shell 1 are integrally formed with the corresponding sealing connection ends 4, and the two ends of the lower protective shell 2 are also integrally formed with the corresponding sealing connection ends 4. The sealing connection ends 4 of the upper protective shell 1 and the sealing connection ends 4 of the lower protective shell 2 at the same end are spliced ​​to form a complete annular connection structure. When adjacent cable protection pipe sealing devices are connected, the sealing connection ends 4 of the previous device and the sealing connection ends 4 of the subsequent device are adapted and connected to each other. From the perspective of implementation, the snap-fit ​​structure 5, with its snap-fit ​​protrusion and slot design, allows for quick assembly and disassembly of the upper protective shell 1 and the lower protective shell 2 without the need for external tools, significantly improving construction efficiency. Furthermore, the snap-fit ​​structure ensures the sealing integrity of the pipe cavity 3, preventing external impurities from entering through the snap-fit ​​point. The integrated sealing connection end 4 not only simplifies the overall structure of the device and reduces the number of parts assembly steps, but also ensures the structural strength of the connection end. At the same time, adjacent devices can be connected through the sealing connection end 4 to achieve continuous sealing protection for multiple cable protection pipes, solving the problem of difficult multi-segment connection in traditional devices. From an innovative perspective, this combination structure of "interlocking splicing + integrated sealing connection end" breaks the limitations of traditional sealing devices that rely on external connectors or integrated structures. While ensuring sealing performance, it also takes into account assembly flexibility. The symmetrical interlocking design of the upper protective shell 1 and the lower protective shell 2 can also adapt to cable protection pipes of different specifications, improving the versatility of the device. The cavity 3 is formed by the enclosing of the upper and lower protective shells. With the sealing effect after interlocking, it can form a stable wrapping around the cable protection pipe from the outside. The butt joint design of the sealing connection end 4 realizes the sealing connection between adjacent devices from the end. The two work together to effectively solve the problems of insufficient sealing performance, inconvenient assembly, and difficulty in multi-segment connection of existing devices, providing a reliable guarantee for the long-term stable operation of cable protection pipes.

[0019] like Figure 3 and Figure 4 As shown, in terms of sealing and detailed design, the upper protective shell 1 and the lower protective shell 2 are made of elastic materials. The locking protrusion 6 combines the inner inverted "V" shaped plate of the upper protective shell 1 with the outer cylindrical protrusion. The plate corresponds to the locking groove 8, and the protrusion corresponds to the locking edge 7, using elasticity to achieve a stable and detachable locking seal. The sealing connection end 4 is a conical hollow plate. The end faces of the upper and lower protective shell sealing connection ends 4 at the same end are spliced ​​to form a complete ring, and multiple sealing rings 8 are provided between the ends to strengthen the seal. In addition, an elastic sealing layer is provided along the length of the inner wall of the cavity 3, which fits against the outer wall of the cable protection pipe, improving the sealing performance from multiple dimensions such as the inside of the cavity and the connection end. Combined with the elastic material and the locking and splicing structure, the device ensures the sealing and protection effect of the cable protection pipe.

[0020] In this embodiment, the elastic materials of the upper protective shell 1 and the lower protective shell 2 have deformable properties. The inner inverted "V" shaped plate protrusion 6 can deform slightly during the locking action. After being embedded in the locking groove 8, it achieves a tight engagement through elastic reset. The outer cylindrical protrusion 6 fits against the locking edge 7 to form a secondary limit. The double locking structure not only avoids loosening of the locking but also ensures ease of disassembly. The conical hollow plate design of the sealed connection end 4 allows for precise positioning by the conical surface guidance when adjacent devices are docked. The upper and lower protective shells on the same end... After the sealing connection end 4 of the protective shell is spliced, its annular inner side is adapted to the outer wall of the cable protection pipe. The multi-layer sealing ring 8 between the ends is evenly distributed along the annular end face and fills the connection gap through compression deformation. The elastic sealing layer of the inner wall of the cavity 3 echoes the elastic material of the protective shell and completely covers the inner wall along the length of the cavity. After the cable protection pipe is installed, it can automatically fit the pipe wall and fill the tiny protrusions or gaps in the pipe wall. At the same time, the elastic sealing layer can also buffer the thermal expansion and contraction of the protective pipe caused by temperature changes and avoid sealing failure due to deformation. From an implementation perspective, the combination of elastic material and the inverted "V"-shaped locking protrusion 6 solves the problems of easy jamming and difficult disassembly in traditional rigid locking structures. The conical sealing connection end 4, combined with multi-layer sealing rings 8, significantly improves the reliability of the end seal compared to planar connections. The elastic sealing layer on the inner wall of the pipe cavity supplements the shortcomings of the outer wall locking seal from the inside. From an innovation perspective, this multi-dimensional design of "elastic locking + conical positioning seal + inner wall fitting seal" breaks through the limitations of the single seal of traditional devices. Through the synergy of material properties and structural design, it not only adapts to the assembly requirements under different construction scenarios, but also resists the intrusion of external moisture and impurities for a long time. It effectively solves the problems of short sealing life and poor adaptability of existing devices, and further enhances the all-round protection effect of cable protection pipes. In the actual use of this cable protection pipe sealing device, it needs to be used in conjunction with the existing cable protection pipe body (usually made of PVC or MPP material, compatible with the pipe cavity of this device), cable conduit inserter (used to smoothly insert the cable into the protection pipe fitted with this device, avoiding scratches on the cable sheath by the protection pipe or the inner wall of this device during the insertion process), stainless steel hose clamp (when the sealing connection ends of adjacent devices are connected, the stainless steel hose clamp can be wrapped around the outside of the sealing connection end for auxiliary tightening, further improving the structural stability after multiple devices are connected, and preventing loosening of the connection due to vibration during long-term use), air tightness tester (after the device is installed, the air tightness of the pipe cavity and sealing connection ends is tested by this instrument to ensure that there is no gas leakage, and thus verify that moisture and impurities cannot enter), and silicone-based lubricant (when assembling the upper and lower protective shells, a small amount of this lubricant can be applied to the contact area between the protrusion and the groove to reduce the frictional resistance when the elastic material is engaged, facilitating quick assembly and Without damaging the snap-fit ​​structure and avoiding chemical reactions between the lubricant and the materials used in this device, the upper and lower protective shells can be made of EPDM rubber or chlorinated polyethylene elastic material, the elastic sealing layer can be made of nitrile rubber, and the multi-layer sealing ring can be made of fluororubber. These materials all have good aging resistance and acid and alkali resistance, and are suitable for common underground or outdoor cable laying environments. In addition, before assembling the cable protection pipe with the device cavity, the outer wall of the protection pipe needs to be polished and cleaned with sandpaper or cleaning cloth to remove surface burrs and dust, ensuring that the elastic sealing layer on the inner wall of the cavity can fit tightly with the outer wall of the protection pipe, further improving the sealing effect. During later maintenance, conventional tools such as wrenches are needed to remove the stainless steel hose clamps for inspection and replacement of the device or protection pipe. Through the synergistic cooperation of these existing technologies and this device, a complete construction process from assembly to inspection and maintenance can be achieved, ensuring the stable performance of the sealing and protection function of this device.

[0021] Specifically, in the complete usage process of this cable protection pipe sealing device, the outer diameter and single-section laying length of the cable protection pipe to be installed must first be measured using a steel tape measure (as is available in existing technology). Based on the measurement data, the installation spacing of this device is determined to ensure precise alignment of the sealing connection ends of adjacent devices. Simultaneously, a right-angle ruler is used to calibrate the flatness of the pipe end face to avoid sealing gaps after assembly due to end face tilt. When assembling this device, the lower protective shell is first placed on the pre-fixed cable protection pipe bracket (existing support component), allowing the elastic sealing layer of the inner wall of the pipe cavity to initially adhere to the outer wall of the protection pipe. Then, the upper protective shell is placed... Attach the upper protective shell to the top of the lower protective shell. Gently tap along the edge of the upper protective shell with a rubber mallet (existing tool) to ensure the locking protrusion is fully embedded in the slot, guaranteeing a secure connection. Then, take out the existing level and attach it to the outer wall of the sealed connection end. Adjust the device position to ensure the sealed connection end remains coaxial, preventing misalignment during subsequent docking of adjacent devices. Before threading the cable, first secure the existing cable pulling head (with threaded structure) to the cable end with insulating tape. Then connect the pulling head to the cable conduit pull rope. Slowly pull the pull rope to allow the cable to pass through the protective tube equipped with this device. If resistance is encountered, the cable can be supported by roller brackets in existing technology to reduce friction between the cable and the inner wall of the conduit. When connecting adjacent devices, insert the sealing connection end of the latter device into the inside of the sealing connection end of the former device, rotate the latter device to make the annular end faces of both ends fully fit, and then use a torque wrench (existing tool) to evenly tighten the stainless steel hose clamp on the outside of the sealing connection end, ensuring that the tightening torque of the hose clamp meets the construction specifications, avoiding excessive looseness which may lead to sealing failure or excessive tightness which may damage the sealing connection end. After installation, in addition to performing airtightness testing, a grounding resistance tester in existing technology should also be used to test the connection between the cable protection pipe and the grounding. The connection resistance of the device ensures that the protective tube has good grounding performance. During routine maintenance, the surface temperature of the device can be checked periodically using an infrared thermometer from the existing product to determine whether the device is overheating abnormally due to cable overload. If the sealing ring needs to be replaced, the old sealing ring can be gently cut open along the edge of the sealing ring with a utility knife (existing tool), the groove of the sealing connection end can be cleaned, the new sealing ring can be embedded in the groove and pressed flat. Through the synergistic operation of these existing technical solutions with this device, a complete usage plan is formed from the initial measurement, the intermediate assembly to the later maintenance, further ensuring the stable operation of the device and the safe protection of the cable.

[0022] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A cable protection tube sealing device, characterized in that, It includes an upper protective shell (1) and a lower protective shell (2) that are mutually adapted and engaged, and the upper protective shell (1) and the lower protective shell (2) together enclose a cavity (3) for accommodating the cable protection tube. The upper protective shell (1) and the lower protective shell (2) are respectively provided with a sealing connection end (4) at their ends that are far apart from each other. The sealing connection ends (4) at both ends are adapted to each other and are used for sequential connection of sealing devices of adjacent cable protection pipes. The upper protective shell (1) and the lower protective shell (2) are provided with a matching snap-fit ​​structure (5) at the snap-fit ​​connection point, so as to realize the detachable snap-fit ​​between the two, and form a sealed cavity (3) structure after snap-fit.

2. The cable protection pipe sealing device according to claim 1, characterized in that, The snap-fit ​​structure (5) includes a snap protrusion (6) on the snap-fit ​​side (7) of the upper protective shell (1) and a snap groove (8) on the snap-fit ​​side (7) of the lower protective shell (2) that is adapted to the snap protrusion (6). The snap protrusion (6) is embedded in the snap groove (8) to realize the snap-fit ​​connection between the upper protective shell (1) and the lower protective shell (2).

3. The cable protection pipe sealing device according to claim 2, characterized in that, Both the upper protective shell (1) and the lower protective shell (2) are made of elastic material. The latch (6) includes an inverted "V" shaped plate on the inner shell of the upper protective shell (1) and a cylindrical protrusion on the outer shell of the upper protective shell (1). The plate corresponds to the latch groove (8) and the protrusion corresponds to the latching edge (7).

4. The cable protection pipe sealing device according to claim 1, characterized in that, The sealing connection end (4) is a conical hollow plate structure. The end face of the upper protective shell (1) sealing connection end (4) and the end face of the lower protective shell (2) sealing connection end (4) are spliced ​​together to form a complete annular end face. Multiple sealing rings (9) are provided between the sealing connection ends (4).

5. The cable protection pipe sealing device according to claim 1, characterized in that, The inner wall of the cavity (3) of the upper protective shell (1) and the lower protective shell (2) is provided with an elastic sealing layer for fitting the outer wall of the cable protection pipe. The elastic sealing layer is arranged along the length of the cavity (3) to enhance the sealing between the cavity (3) and the cable protection pipe.

Images