Corrugated cable blocking device with double-sealing structure

Abstract

The invention relates to the technical field of cable plugging, in particular to a corrugated cable plugging device with a double-sealing structure, which comprises a head sealing mechanism, the upper part of the head sealing mechanism is of a hollow circular truncated cone structure, and the lower part of the head sealing mechanism is of a hollow cylindrical structure. The plugging pipe is structurally composed of a double-layer corrugated pipe structure, a first connecting block is arranged at the top of the plugging pipe, the plugging pipe is connected with the head sealing mechanism through the first connecting block at the upper end, a first connecting groove is formed in the lower end of the plugging pipe, and a tail sealing mechanism is arranged at the lower end of the first connecting groove; the upper portion of the tail sealing mechanism is of a hollow cylindrical structure, the lower portion of the tail sealing mechanism is of a hollow circular truncated cone structure, and a cylindrical structure arranged on the circular truncated cone structure. Flanges are arranged at the upper end and the lower end of the plugging pipe and attached to the head sealing mechanism and the tail sealing mechanism. The invention has the advantages of safety, reliability, long service life and no need of frequent replacement.

Description

Technical Field

[0001] The invention relates to the technical field of cable plugging, in particular to a corrugated cable plugging device with a double sealing structure. Background Art

[0002] As we all know, according to the requirements of the "Typical Fire Protection Regulations for Power Equipment", all cable holes, holes, shafts and cable entrances into oil areas that pass through walls, floors and cable trenches to enter control rooms, cable mezzanines, control cabinets and instrument panels, protection panels, etc. must be tightly sealed with fire-proof plugging materials to prevent water, seepage and moisture, and to prevent silt and small animals from entering the pipelines and causing various cable failures.

[0003] At present, the existing cable blocking devices have certain drawbacks when used. When the cable is installed and blocked, the cable passes through the cable pipe, and the cable end is easily damaged. When the cable is blocked through the pipe, the effect is unsatisfactory, and the operation is complicated, time-consuming and labor-intensive. At the same time, the existing cable blocking devices generally use a single tube with a thin wall. After a long period of use, it is easy to be corroded by corrosive components, so it needs to be replaced frequently. Frequent replacement not only brings inconvenience in use but also reduces economic benefits.

[0004] Therefore, in order to solve the above problems, we propose a corrugated cable plugging device with a double sealing structure. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a safe, reliable, long-life, and non-required double-sealed corrugated cable plugging device, thereby solving the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrugated cable plugging device with a double sealing structure, which includes a head sealing mechanism, whose upper shape is a hollow truncated cone structure and the lower shape is a hollow cylindrical structure. A sealing tube is arranged at the lower end of the head sealing mechanism, and the structure of the sealing tube is composed of a double-layer corrugated tube structure. A first connecting block is arranged on the top of the sealing tube, and the sealing tube is connected to the head sealing mechanism through the upper first connecting block. A first connecting groove is arranged at the lower end of the sealing tube, and a tail sealing mechanism is arranged at the lower end of the first connecting groove. The tail sealing mechanism is composed of an upper hollow cylindrical structure, a lower hollow truncated cone structure and a cylindrical structure arranged on the truncated cone structure. Flanges are also arranged between the upper and lower ends of the sealing tube, which are fitted with the head sealing mechanism and the tail sealing mechanism.

[0007] Preferably, a second connecting groove is provided at the lower end of the head sealing mechanism, a first sealing ring is provided inside the second connecting groove, and the head sealing mechanism is threadedly mounted on the blocking tube via the second connecting groove.

[0008] Preferably, the blocking tube includes a double-layer corrugated tube arranged in the middle, and the double-layer corrugated tube includes an outer corrugated tube arranged on the outside and an inner corrugated tube arranged on the inside.

[0009] Preferably, the upper end of the double-layer corrugated pipe is fixedly connected to the first connecting block, and the lower end of the double-layer corrugated pipe is fixedly connected to the first connecting groove.

[0010] Preferably, the outer bellows comprises, from the outside to the inside, a corrosion-resistant stainless steel layer, a polytetrafluoroethylene layer and a low-carbon structural steel layer, and the inner bellows comprises, from the outside to the inside, a metal corrugated structural layer, a polymer corrugated corrosion-resistant layer and a metal corrugated inner support layer, and the polymer corrugated corrosion-resistant layer is made of plastic made of fluororesin.

[0011] Preferably, the metal corrugated structural layer is laminated to the low-carbon structural steel layer.

[0012] Preferably, the tail sealing mechanism comprises a second connecting block embedded in the lower end of the blocking tube, a blocking disk is arranged on the outer side of the lower end of the second connecting block, and a limiting disk is arranged on the upper end of the blocking disk.

[0013] Preferably, the first connecting block at the upper end of the blocking tube includes a sealing groove and a connecting column, a second sealing ring is arranged inside the sealing groove, and the connecting column bolts are installed with a head sealing mechanism and a flange.

[0014] Preferably, the flange includes a connecting plate and a fixing hole from the inside to the outside in sequence, the flange is arranged on the upper and lower sides of the blocking tube through the connecting plate thread, and the fixing hole is arranged on the flange in a cross shape.

[0015] Preferably, a plurality of fixing holes are provided on the flange, and fixing bolts are also provided in the fixing holes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention forms a cable blocking device through a head sealing mechanism, a blocking tube and a tail sealing mechanism, so that the cable blocking device blocks the tail or head of the cable with a double sealing structure, so that after the cable blocking device is installed, the cable passes through the blocking tube through the tail sealing mechanism and passes out through the head sealing mechanism; and the cable passing through the blocking tube is sealed by the head sealing mechanism and the tail sealing mechanism to achieve waterproofing, seepage prevention, moisture prevention, and prevent silt and small animals from entering the pipeline to cause various cable faults; 2. The present invention forms an outer bellows through the external structure of the plugging pipe, which is compositely formed by a corrosion-resistant stainless steel layer, a polytetrafluoroethylene layer and a low-carbon structural steel layer. A polytetrafluoroethylene layer is arranged in the middle of the outer bellows, and the polytetrafluoroethylene layer is corrosion-resistant; the inner layer of the outer bellows uses a low-carbon structural steel layer, which prevents the polytetrafluoroethylene layer from shifting and plays a role in supporting the skeleton; the outer layer of the outer bellows is a corrosion-resistant stainless steel layer, which plays the role of pressure bearing, compensation, sealing and corrosion resistance; 3. The present invention forms an inner corrugated tube through the internal structure of the sealing tube, which is composed of a metal corrugated structural layer, a polymer corrugated corrosion-resistant layer and a metal corrugated inner support layer. The metal corrugated structural layer plays a pressure-bearing role, the polymer corrugated corrosion-resistant layer plays an anti-corrosion role, and the metal corrugated inner support layer plays a uniform support role. In summary, the present invention forms a corrugated cable plugging device with a double sealing structure through a head sealing mechanism, a sealing tube and a tail sealing mechanism. The device is safe and reliable, and easy to operate. After a long period of use, it is not easily corroded by corrosive components or damaged by foreign objects, which effectively avoids various faults of the cables arranged inside it and achieves the purpose of not requiring frequent replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the cable blocking device of the present invention; Figure 3 It is an exploded view of the overall structure of the cable blocking device of the present invention; Figure 4 It is a schematic diagram of the internal structure of the head sealing mechanism of the present invention; Figure 5 It is a schematic diagram of the plugging tube structure of the present invention; Figure 6 It is a schematic diagram of the internal cross-sectional structure of the plugging tube of the present invention; Figure 7 It is a schematic diagram of the internal structure of the tail sealing mechanism of the present invention.

[0018] Explanations in the figure: 1. Head sealing mechanism; 2. Sealing tube; 3. Flange; 4. Tail sealing mechanism; 5. Fixing bolt; 6. Connecting plate; 7. Fixing hole; 8. First connecting block; 9. First connecting groove; 10. Second connecting block; 11. Limiting plate; 12. Blocking plate; 13. Second connecting groove; 14. First sealing ring; 15. Outer bellows; 16. Inner bellows; 17. Sealing groove; 18. Connecting column; 19. Second sealing ring; 20. Corrosion-resistant stainless steel layer; 21. Polytetrafluoroethylene layer; 22. Low-carbon structural steel layer; 23. Metal corrugated structural layer; 24. Polymer corrugated corrosion-resistant layer; 25. Metal corrugated inner support layer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0020] like Figure 1-3 As shown, this embodiment discloses a corrugated cable plugging device with a double sealing structure, which includes a head sealing mechanism 1, whose upper shape is a hollow truncated cone structure and whose lower shape is a hollow cylindrical structure. A plugging tube 2 is arranged at the lower end of the head sealing mechanism 1, and the structure of the plugging tube 2 is composed of a double-layer corrugated tube structure. A first connecting block 8 is arranged at the top of the plugging tube 2, and the plugging tube 2 is connected to the head sealing mechanism 1 through the upper first connecting block 8. A first connecting groove 9 is arranged at the lower end of the plugging tube 2, and a tail sealing mechanism 4 is arranged at the lower end of the first connecting groove 9. The tail sealing mechanism 4 is composed of an upper hollow cylindrical structure, a lower hollow truncated cone structure and a cylindrical structure arranged on the truncated cone structure. A flange 3 is also arranged between the upper and lower ends of the plugging tube 2, which are fitted with the head sealing mechanism 1 and the tail sealing mechanism 4. Among them, the flange 3 includes a connecting plate 6 and a fixing hole 7 from the inside to the outside. The flange 3 is threadedly arranged on the upper and lower sides of the sealing tube 2 through the connecting plate 6. The fixing hole 7 is arranged in a cross shape on the flange 3. There are multiple fixing holes 7 on the flange 3, and fixing bolts 5 are also arranged in the fixing holes 7.

[0021] In this embodiment, the sealing tube 2 is arranged inside the cable blocking wall, and the sealing tube 2 adopts a corrugated structure to improve the flexibility of the cable blocking device, so that it can adapt to the blocking of cables with non-straight settings such as bending. At the same time, the flanges 3 provided on both sides of the sealing tube 2 can be more suitably lengthed, so that it can be more adaptable to longer and more complicated situations when the cable is blocked. By installing fixing bolts 5 on the flanges 3, the device can be firmly set on the cable blocking wall. Example

[0022] like Figure 1-7As shown, this embodiment discloses a corrugated cable plugging device with a double sealing structure, which includes a head sealing mechanism 1, whose upper shape is a hollow truncated cone structure and the lower shape is a hollow cylindrical structure. A plugging tube 2 is arranged at the lower end of the head sealing mechanism 1. The structure of the plugging tube 2 is composed of a double-layer corrugated tube structure. A first connecting block 8 is arranged on the top of the plugging tube 2. The plugging tube 2 is connected to the head sealing mechanism 1 through the upper first connecting block 8. A first connecting groove 9 is arranged at the lower end of the plugging tube 2. A tail sealing mechanism is arranged at the lower end of the first connecting groove 9. 4, the upper shape of the tail sealing mechanism 4 is a hollow cylindrical structure, the lower shape is a hollow truncated cone structure and a cylindrical structure arranged on the truncated cone structure. A flange 3 is also arranged between the upper and lower ends of the plugging tube 2 and the head sealing mechanism 1 and the tail sealing mechanism 4. The flange 3 includes a connecting plate 6 and a fixing hole 7 from the inside to the outside. The flange 3 is threadedly arranged on the upper and lower sides of the plugging tube 2 through the connecting plate 6. The fixing hole 7 is arranged on the flange 3 in a cross shape. A plurality of fixing holes 7 are arranged on the flange 3, and a fixing bolt 5 is also arranged in the fixing hole 7; Among them, a second connecting groove 13 is provided at the lower end of the head sealing mechanism 1, a first sealing ring 14 is provided inside the second connecting groove 13, and the head sealing mechanism 1 is threadedly installed on the plugging pipe 2 through the second connecting groove 13; the plugging pipe 2 includes a double-layer bellows arranged in the middle, the double-layer bellows includes an outer bellows 15 arranged on the outside and an inner bellows 16 arranged on the inside, the upper end of the double-layer bellows is fixedly connected to the first connecting block 8, the lower end of the double-layer bellows is fixedly connected to the first connecting groove 9, and the outer bellows 15 includes a corrosion-resistant stainless steel layer 20, a polytetrafluoroethylene layer 21 and a low-carbon structural steel layer 22 from the outside to the inside. The inner bellows 16 includes a metal corrugated structure layer 23, a polymer corrugated corrosion resistance layer 24 and a metal corrugated inner support layer 25 from the outside to the inside. The metal corrugated structure layer 23 is bonded to the low-carbon structural steel layer 22. The first connecting block 8 at the upper end of the plugging tube 2 includes a sealing groove 17 and a connecting column 18. A second sealing ring 19 is arranged inside the sealing groove 17. The connecting column 18 is bolted to install the head sealing mechanism 1 and the flange 3; the tail sealing mechanism 4 includes a second connecting block 10 embedded in the lower end of the plugging tube 2, a blocking disk 12 is arranged on the outer side of the lower end of the second connecting block 10, and a limiting disk 11 is arranged on the upper end of the blocking disk 12.

[0023] In this embodiment, the plugging tube 2 adopts a double-layer structure, so that it can more safely and effectively protect the cables inserted into the plugging tube 2. At the same time, the plugging tube 2 is sealed by the head sealing mechanism 1 and the tail sealing mechanism 4 on both sides, so that the overall safety is further improved, and the overall cable sealing effect of the structure can be improved. At the same time, the outer structure of the plugging tube 2 is formed by the corrosion-resistant stainless steel layer 20, the polytetrafluoroethylene layer 21 and the low-carbon structural steel layer 22 to form an outer corrugated tube 15. A polytetrafluoroethylene layer is arranged in the middle of the outer corrugated tube 15, and the polytetrafluoroethylene layer is corrosion-resistant; the outer corrugated tube 15 is The inner layer of the bellows 15 uses a low-carbon structural steel layer, which prevents the polytetrafluoroethylene layer from shifting and plays a role in supporting the skeleton. The outer layer of the outer bellows 15 is a corrosion-resistant stainless steel layer, which plays the role of pressure bearing, compensation, sealing and corrosion prevention. The internal structure of the sealing tube 2 is then composited into an inner bellows 16 by a metal corrugated structural layer, a polymer corrugated corrosion-resistant layer and a metal corrugated inner support layer, so that the metal corrugated structural layer plays a role in bearing pressure, the polymer corrugated corrosion-resistant layer plays a role in corrosion prevention, and the metal corrugated inner support layer plays a role in uniform support, so that the device has good stability and its overall service life is improved.

[0024] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A corrugated cable plugging device with a double sealing structure, characterized in that: It comprises a head sealing mechanism (1), the upper part of which is in the shape of a hollow truncated cone structure and the lower part of which is in the shape of a hollow cylindrical structure. A plugging tube (2) is arranged at the lower end of the head sealing mechanism (1), the structure of the plugging tube (2) is composed of a double-layer corrugated tube structure, a first connecting block (8) is arranged at the top of the plugging tube (2), the plugging tube (2) is connected to the head sealing mechanism (1) through the upper first connecting block (8), a first connecting groove (9) is arranged at the lower end of the plugging tube (2), a tail sealing mechanism (4) is arranged at the lower end of the first connecting groove (9), the tail sealing mechanism (4) is composed of an upper part in the shape of a hollow cylindrical structure, a lower part in the shape of a hollow truncated cone structure and a cylindrical structure arranged on the truncated cone structure, and a flange (3) is arranged between the upper and lower ends of the plugging tube (2) where the head sealing mechanism (1) and the tail sealing mechanism (4) are affixed.

2. According to claim 1, a corrugated cable plugging device with a double sealing structure is characterized in that: A second connecting groove (13) is provided at the lower end of the head sealing mechanism (1), a first sealing ring (14) is provided inside the second connecting groove (13), and the head sealing mechanism (1) is threadedly mounted on the plugging tube (2) via the second connecting groove (13).

3. According to the double-sealed structure of the corrugated cable plugging device of claim 1, it is characterized by: The blocking tube (2) comprises a double-layer corrugated tube arranged in the middle, and the double-layer corrugated tube comprises an outer corrugated tube (15) arranged on the outside and an inner corrugated tube (16) arranged on the inside.

4. According to claim 3, a corrugated cable plugging device with a double sealing structure is characterized in that: The upper end of the double-layered corrugated pipe is fixedly connected to the first connecting block (8), and the lower end of the double-layered corrugated pipe is fixedly connected to the first connecting groove (9).

5. According to claim 3, a corrugated cable plugging device with a double sealing structure is characterized in that: The outer bellows (15) comprises, from the outside to the inside, a corrosion-resistant stainless steel layer (20), a polytetrafluoroethylene layer (21) and a low-carbon structural steel layer (22), and the inner bellows (16) comprises, from the outside to the inside, a metal corrugated structural layer (23), a polymer corrugated corrosion-resistant layer (24) and a metal corrugated inner support layer (25).

6. According to claim 5, a corrugated cable plugging device with a double sealing structure is characterized in that: The metal corrugated structural layer (23) is arranged in close contact with the low-carbon structural steel layer (22).

7. According to claim 1, a corrugated cable plugging device with a double sealing structure is characterized in that: The tail sealing mechanism (4) comprises a second connection block (10) embedded in the lower end of the blocking tube (2), a blocking disk (12) is arranged outside the lower end of the second connection block (10), and a limiting disk (11) is arranged at the upper end of the blocking disk (12).

8. According to claim 1, a corrugated cable plugging device with a double sealing structure is characterized in that: The first connection block (8) at the upper end of the plugging tube (2) comprises a sealing groove (17) and a connection column (18), a second sealing ring (19) is arranged inside the sealing groove (17), and the connection column (18) is bolted to the head sealing mechanism (1) and the flange (3).

9. The double-sealed corrugated cable plugging device according to claim 1, characterized in that: The flange (3) comprises, from the inside to the outside, a connecting plate (6) and a fixing hole (7), the flange (3) being threadedly arranged on the upper and lower sides of the plugging tube (2) via the connecting plate (6), and the fixing hole (7) being arranged on the flange (3) in a cross shape.

10. A corrugated cable plugging device with a double sealing structure according to claim 9, characterized in that: A plurality of fixing holes (7) are provided on the flange (3), and fixing bolts (5) are also provided in the fixing holes (7).

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