Through-wall sealing module for cable pipeline

Abstract

The invention discloses a through-wall sealing module for a cable pipeline. The through-wall sealing module comprises a supporting part and an elastic reducing module arranged in the supporting part, the elastic variable-diameter module comprises a plurality of sealing sleeves, and the supporting part and the elastic variable-diameter module as well as connecting parts arranged between the adjacent sealing sleeves are connected into a whole; a through hole is formed in the sealing sleeve and used for containing a pipeline. The elastic reducing module and the supporting part are each provided with a cutting groove, and the cutting grooves are formed in the radial line direction and extend into the through hole. The sealing module is of an integrated structure, and the sealing sleeves are connected without adhesives, so that the leakage risk caused by failure of the adhesives can be avoided, the sealing effect can be ensured, and the sealing stability is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing, in particular to a cable pipeline wall-penetrating sealing module. BACKGROUND

[0002] In high-level biosafety laboratories (such as BSL-3, BSL-4), GMP clean rooms or animal houses, there are often pipes (such as cables, optical fibers, gas pipes or water pipes) that need to pass through the enclosure structures such as walls, ceilings and floors. These wall-penetrating points are the weakest key airtight nodes.

[0003] The existing sealing module adopts a split structure. For example, a sealing block for penetrating a pipe disclosed in CN201827526U includes an upper module and a lower module. The upper and lower modules have a through hole for the pipe to pass through. The through hole has one or more filling layers. The filling layer is a self-adhesive material. The application of the self-adhesive material can prevent the filling layer from falling off, thereby improving the sealing performance of the sealing block.

[0004] For another example, a multi-line sealing module disclosed in CN101865333A has a cable through hole on a block-shaped body. The inner side of the cable through hole is attached with a peelable patch. For cables with different outer diameters, the corresponding layer can be peeled off to adapt to the outer diameter of the cable.

[0005] The contact surfaces between the adjacent two filling layers or patches of the above-mentioned existing sealing modules are coated with an adhesive. However, the presence of the adhesive will cause local hardening over a long period of time. When the sealing module is tightened around the pipe, the pressure distribution is uneven, which affects the sealing effect. After long-term compression, the glued area may not recover to its original state like the main material (filling layer or patch). In a biosafety laboratory, chemical disinfectants (such as peracetic acid, chlorine-containing disinfectants and aldehyde disinfectants) need to be used frequently and intensively. The corrosion resistance of the adhesive is much worse than that of the main material. The disinfectant will preferentially corrode the adhesive interface, causing powdering and loss of adhesion, thereby forming a through leakage channel. SUMMARY

[0006] To solve the above problems, the present application provides a cable pipeline wall-penetrating sealing module. The support part and the elastic variable-diameter module are connected by a connecting part to form an integrated structure, without the need for an adhesive connection, which can avoid leakage caused by adhesive failure. The following technical solutions are adopted: The cable pipeline wall-penetrating sealing module includes a support part and an elastic variable-diameter module arranged in the support part. The elastic variable-diameter module includes a plurality of sealing sleeves. The support part, the elastic variable-diameter module and the adjacent sealing sleeves are connected by a connecting part to form an integrated structure. The sealing sleeve has a through hole for placing a pipe. The elastic diameter-changing module and the support part are both provided with a cut groove, which is opened along the radial direction and extends into the through hole.

[0007] Preferably, the support part and the elastic diameter-changing module are both made of elastic material.

[0008] Preferably, the sealing sleeves are arranged concentrically from inside to outside to form the elastic diameter-changing module.

[0009] Preferably, the connecting parts between adjacent sealing sleeves are distributed in a dot shape to form a ring, so as to quickly remove the connecting parts.

[0010] Preferably, the main frame is further provided with a containing groove, and the support part and the elastic diameter-changing module are both arranged in the containing groove.

[0011] Further preferably, one end of the support part is provided with a limiting ring for limiting the position of the support part on the main frame.

[0012] Compared with the prior art, the application has the following beneficial effects: 1. The sealing module of the application is an integrated structure, and the sealing sleeves do not need to be connected by using an adhesive, so as to avoid the risk of leakage caused by the failure of the adhesive, ensure the sealing effect, and have good sealing stability.

[0013] 2. The elastic diameter-changing module can be sleeved on the outside of the pipeline by removing the connecting parts of the sealing sleeves of the corresponding size on the elastic diameter-changing module according to the outer diameter size of the pipeline to be sealed, so as to adapt to the sealing of pipelines with different outer diameter sizes.

[0014] 3. The cut groove opened on the support part and the elastic diameter-changing module of the sealing module can open the elastic diameter-changing module, and the pipeline can be loaded into or taken out of the through hole, so as to realize the quick installation or replacement of the pipeline, which is convenient, fast and efficient.

[0015] 4. The elastic diameter-changing module can be automatically reset after installation, which can effectively avoid the gap between the sealing sleeves at the cut groove and improve the sealing performance of the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of the sealing module of the application; Figure 2 is an exploded view of the sealing device of the application; Figure 3 is an installation schematic view of the sealing device of the application.

[0017] In the drawings: A, sealing device, B, sleeve, C, enclosure structure; 10, sealing module, 100, through hole, 11, support part, 12, elastic variable diameter module, 120, sealing sleeve, 13, connecting part, 14, cutting groove; 20, main body frame; 30, gland assembly, 310, pressing plate, 320, pressing assembly; 40, limiting part. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings of the present application. Obviously, the embodiments described in the present application are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] Reference Figures 1 to 3 , the present application is further described in detail: Combined Figure 1 , a cable pipeline through-wall sealing module 10, comprising a support part 11, and an elastic variable diameter module 12 provided in the support part 11, the elastic variable diameter module 12 can adapt to different pipes (such as cable, optical fiber, gas pipe or water pipe). Among them, the support part 11 and the elastic variable diameter module 12 are made of elastic material (such as silicone rubber, fluorine rubber, etc.). In the present embodiment, the sealing module 10 is taken as an example to illustrate the cylindrical structure; of course, the sealing module 10 can also be a polygonal structure, etc., which is not limited here.

[0020] The elastic variable diameter module 12 comprises a plurality of sealing sleeves 120, the sealing sleeves 120 are arranged in sequence from inside to outside to form the elastic variable diameter module 12, the support part 11 and the elastic variable diameter module 12, and the adjacent sealing sleeves 120 are connected by connecting parts 13 to be integrated. That is, each of the sealing sleeves 120 is sequentially wrapped in a concentric ring shape from the inside to the outside, and the support part 11 and the sealing sleeves 120 are integrally formed; compared with the existing split type sealing module 10, the present application can avoid the gap caused by the mispositioning of the sealing sleeve 120, which leads to leakage, and the sealing of the pipe is better.

[0021] The sealing sleeve 120 is provided with the through hole 100 for placing the pipe, and the inner wall of the through hole 100 is attached to the surface of the pipe; in the present embodiment, the sealing sleeve 120 is a cylindrical structure with an internal hollow (i.e. through hole 100).

[0022] Both the support portion 11 and the elastic diameter reducing module 12 are provided with grooves 14. The grooves 14 are formed radially on the elastic diameter reducing module 12 and extend to the through hole 100. That is, the grooves 14 extend radially from the outer surface of the support portion 11 to the through hole 100 of the innermost sealing sleeve 120, rather than penetrating the through hole 100. This makes it easier to insert or remove the pipe from the through hole 100.

[0023] In use, the connecting part 13 of the sealing sleeve 120 at the level matching the outer diameter of the pipe can be removed by cutting or other methods according to the outer diameter of the pipe. This allows the corresponding sealing sleeve 120 to be separated and removed from the elastic diameter module 12, thereby ensuring that the size of the through hole 100 on the innermost sealing sleeve 120 of the elastic diameter module 12 matches the outer diameter of the pipe. The elastic diameter module 12 can be opened by the groove 14 to allow the pipe to be placed into or removed from the through hole 100. The groove 14 can be closed by the self-resetting property of the elastic material after the pipe is installed, avoiding additional gaps.

[0024] The sealing module 10 of this application is an integral, peelable structure. The sealing sleeves 120 do not require adhesive bonding, thus avoiding the risk of leakage due to adhesive failure and ensuring a good sealing effect and stability. The elastic reducing module 12 can be opened through the groove 14, allowing the pipe to be inserted into or removed from the through hole 100. After installation, the groove 14 closes due to the self-resetting property of the elastic material, enabling quick installation or replacement of the pipe, which is convenient, efficient, and provides better sealing. Furthermore, the elastic reducing module 12 can automatically reset itself after installation, preventing misalignment between the layers of sealing sleeves 120 at the groove 14, thus avoiding gaps that could lead to leakage and further enhancing the pipe's sealing performance.

[0025] In this embodiment, the connecting portions 13 between adjacent sealing sleeves 120 are distributed in a dotted pattern forming a circle. This facilitates quick removal of the connecting portions 13; of course, the connecting portions 13 can also be a continuous annular structure. In this embodiment, the length of the connecting portion 13 ( Figure 1 The height (in the middle) is 0.2-1cm, preferably 0.2-0.5cm.

[0026] Combination Figure 2This application also discloses a modular sealing device A, which includes at least one sealing module 10 and a main frame 20 for placing the sealing module 10. The sealing module 10 is detachably connected to the main frame 20. Pressure cap assemblies 30 are provided on both sides of the main frame 20, and the pressure cap assemblies 30 are used to clamp the sealing module 10 and the main frame 20. The main frame 20 is made of an elastic material (such as silicone rubber, fluororubber, etc.).

[0027] In this embodiment, the pressure cap assembly 30 includes pressure plates 310 located on both sides of the main frame 20, and a clamping assembly 320 connecting the pressure plates 310. The clamping assembly 320 is used to fasten the pressure plates 310 on both sides of the main frame 20, apply axial pressure to the main frame 20 and the sealing module 10, and cause them to deform in the radial direction to fill the radial gap.

[0028] In this embodiment, the main frame 20 is provided with a plurality of receiving through holes and a plurality of positioning holes. The sealing module 10 is plugged into and connected to the receiving through holes. The receiving through holes match the sealing module 10 and are used to place the sealing module 10, thereby restricting the position of the sealing module 10 within the main frame 20 and preventing the pipe from shaking. The positioning holes are used for the clamping assembly 320 to pass through and connect to the pressure plate 310, thereby restricting the position of the main frame 20 between the pressure plates 310.

[0029] In this embodiment, there are four sealing modules 10, corresponding to four pipes. The number of sealing modules 10 can be increased or decreased according to actual needs.

[0030] Assuming that a new pipe needs to be added, it is only necessary to disassemble the original main frame 20 (with 4 receiving through holes), replace it with the corresponding main frame 20 (with 5 receiving through holes), reinstall the sealing module 10 on the outside of the original pipe into the corresponding receiving through hole in the new main frame 20, and simultaneously add a new sealing module 10, which is then fitted onto the outside of the new pipe and installed into the main frame 20. Compared to the prior art, this application designs each part in a modular way, allowing for combination and assembly as needed, achieving high scalability, while reducing material waste.

[0031] In one implementation, the clamping assembly 320 may be a bolt and a nut to connect the pressure plates 310 on both sides of the main frame 20.

[0032] The sealing module 10 is also provided with a limiting ring to restrict the position of the sealing module 10 in the main frame 20. The limiting ring is located at one end of the support part 11. When the sealing module 10 is installed into the receiving groove, the limiting part abuts against the main frame 20, thereby restricting the position of the sealing module 10 in the main frame 20 and facilitating installation and positioning.

[0033] In one embodiment, the pressure plate 310 may also be provided with a clearance groove to allow the sealing module 10 to be placed into the receiving through groove of the main frame 20. In this case, the clamping assembly only applies axial pressure to the main frame 20, thereby causing the main frame 20 to deform radially and fill the radial gap.

[0034] Combination Figure 3 In one embodiment, to improve sealing performance, a sleeve B is further included. The sleeve B is fixedly installed in a through-hole in the enclosure structure C (such as a wall, ceiling, or floor) and is sealed to the enclosure structure C, thus preventing leakage due to irregularities in the through-hole. A sealing material can be filled between the sleeve B and the through-hole to achieve a seal.

[0035] In one embodiment, a limiting part 40 is further included, which is used to restrict and support the position of the main frame 20 within the sleeve B, facilitating the insertion or removal of the main frame 20, the cap assembly 30, and the sealing module 10 together into or out of the sleeve B. The limiting part is a limiting piece.

[0036] In one embodiment, the outer surface of the sealing module 10 has a conical structure, and the receiving through hole matches the sealing module 10; specifically, the outer surface of the support portion 11 has a conical structure; thus, when the clamping assembly 320 is locked, the inner conical surface of the main frame 20 and the outer inclined surface of the sealing module 10 move relative to each other, converting the axial tightening force into a radial contraction force; the pressure plate 310 generates an axial force that squeezes the sealing module 10 and the main frame 20 to generate a radial sealing force, causing them to deform radially and fill the radial gap, forcing the main frame 20 to fit tightly against the inner wall of the sleeve B; at the same time, the flexible sealing sleeve 120 tightly hugs the outer wall of the pipe to achieve a bidirectional airtight seal, which can prevent the leakage of gas inside the laboratory and prevent external pollutants from entering, thereby forming a highly efficient seal and ensuring the reliability of the seal.

[0037] The modular sealing device of this application adopts a split modular design, eliminating the need for welding or permanent adhesives. It can be assembled as needed, achieving high scalability while reducing material waste. During installation, simply insert the sealing device A into the sleeve B in the through-wall hole and tighten the clamping assembly 320, significantly shortening construction time. When replacing, adding, or repairing pipes, simply loosen the clamping assembly 320 for non-destructive disassembly. The main frame 20 and the sealing module 10 are reusable, significantly reducing costs and improving maintenance efficiency.

Claims

1. A wall-penetrating sealing module for cable conduits, characterized in that: It includes a support portion and an elastically variable diameter module disposed within the support portion; The elastic variable diameter module includes several sealing sleeves, and the support part is connected to the elastic variable diameter module and adjacent sealing sleeves by a connecting part to form an integral unit; The sealing sleeve has a through hole for placing a pipe. Both the elastic variable diameter module and the support are provided with grooves, which are opened along the radial direction and extend into the through hole.

2. The wall-penetrating sealing module for cable conduits according to claim 1, characterized in that: Both the support portion and the elastic diameter-changing module are made of elastic material.

3. The wall-penetrating sealing module for cable conduits according to claim 1, characterized in that: The sealing sleeves are arranged concentrically from the inside out to form the elastic variable diameter module.

4. The wall-penetrating sealing module for cable conduits according to claim 1, characterized in that: The connecting portions between adjacent sealing sleeves are distributed in a dotted pattern in a circle.

5. The wall-penetrating sealing module for cable conduits according to claim 1, characterized in that: It also includes a main frame, on which a receiving groove is provided, and the support part and the elastic variable diameter module are both located in the receiving groove.

6. The wall-penetrating sealing module for cable conduits according to claim 5, characterized in that: One end of the support is provided with a limiting ring, which is used to place and restrict the position of the support on the main frame.

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