A protective cover for operating pipelines

Abstract

The present invention discloses a protective cover for operating pipelines, comprising a flexible cover surface and several metal composite liners. The flexible cover surface is a single piece of strip-shaped three-proof fabric secured to the plurality of spaced-apart metal composite liners by heat-compression bonding. The protective cover for operating pipelines of the present invention combines a non-metallic cover surface with a metal frame in a compact form, making it suitable for assembly line and unitized manufacturing. It is foldable and retractable longitudinally and offers 360 degrees of spatial freedom laterally, making it widely applicable, reusable, and easy to set up and dismantle.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline laying construction, and particularly relates to a protective cover for an operating pipeline. Background Art

[0002] Currently, underground pipeline construction basically adopts the flexible casing method. However, the construction of flexible casing is difficult and the material consumption is large. After one use and aging after being buried together with the cable, it may no longer have the protective effect after the second or multiple excavations.

[0003] The existing urban pipeline laying usually involves excavating trenches where pipelines have been buried in the past. Multiple existing pipelines and high-voltage cables are often exposed on site. Therefore, the excavated pipelines need to be properly protected to prevent the new pipeline laying construction from causing accidental damage or other damage to the existing pipelines, and to prevent the existing high-voltage cables from causing harm to workers.

[0004] In addition, cables with metal shielding protective layers also need to be simply protected in the open air before being buried to avoid accidental injuries during construction.

[0005] Therefore, it is necessary to develop and design a lightweight, durable, portable, low-cost protective cover. Summary of the Invention

[0006] The purpose of the present invention is to provide effective temporary protection for laid pipelines. A protective cover for operating pipelines is proposed, which uses safe, reliable, energy-saving and environmentally friendly materials and has high strength, corrosion resistance and other properties that are conducive to long-term use.

[0007] The present invention provides a running pipeline protection cover, which consists of a flexible cover surface and a plurality of metal composite liners; the flexible cover surface is a whole strip of three-proof cloth, which is fixed to the plurality of metal composite liners arranged at intervals by means of hot pressing and bonding.

[0008] Furthermore, the metal composite lining is composed of a sheet keel and a hot-pressed bonding part.

[0009] As a preferred means, the heat-compression bonding member is fixed at the outer edge of the sheet-like keel.

[0010] Furthermore, the hot-pressed adhesive component is integrally injection-molded on the outer edge of the sheet-like keel.

[0011] Furthermore, two pieces of the heat-pressed adhesive are adhered to the outer edges of the sheet-like keel.

[0012] As a preferred means, it also includes a connecting piece; the metal composite lining at both ends of a single running pipeline protection cover, which is hot-pressed and bonded to the flexible cover surface, is used as a connecting flange; and the adjacent connecting flanges between the two running pipeline protection covers are connected to each other using a connecting piece.

[0013] Furthermore, the connecting piece is a connecting sleeve; the connecting sleeve is in the shape of a hollow open box, with a partition beam in the middle to divide the interior of the connecting sleeve into two accommodating spaces; openings are respectively provided on the side walls of the two accommodating spaces facing the partition beam.

[0014] As a preferred means, the bottoms of the two accommodating spaces are respectively provided with at least one through hole.

[0015] Furthermore, the connecting parts are a female ferrule and a male ferrule; the female ferrule and the male ferrule are arranged on the outer side of the connecting flange relative to the operating pipeline protection cover.

[0016] As a preferred means, the female ferrule and the male clamp are respectively arranged on adjacent side edges of two upright parallel sections of the connecting flange.

[0017] The operating pipeline protection cover of the present invention realizes the combination of a non-metallic cover surface and a metal frame in a small size, and is suitable for assembly line and unitized manufacturing; it is foldable and retractable in the longitudinal direction and has 360 degrees of spatial freedom in the transverse direction, has a wide range of applications, can be reused, and is easy to set up and dismantle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of two connected sections of operating pipeline protection covers;

[0019] Figure 2 This is one of the structural diagrams of the metal composite lining in the present invention;

[0020] Figure 3 This is the second structural diagram of the metal composite lining in the present invention;

[0021] Figure 4 It is one of the schematic diagrams of the connection structure in the present invention;

[0022] Figure 5 It is a structural schematic diagram of the connecting sleeve in the present invention;

[0023] Figure 6 This is the second schematic diagram of the connection structure in the present invention.

[0024] In the picture:

[0025] 1. Flexible cover;

[0026] 2. Connecting flange;

[0027] 3. Metal composite lining; 31. Hot-pressed adhesive; 32. Sheet keel;

[0028] 4. Connecting sleeve; 41. Partition beam; 42. Opening; 43. Female ferrule; 44. Male ferrule; 4', connecting pin;

[0029] 5. Scale cover. DETAILED DESCRIPTION

[0030] The following is combined with Figures 1 to 6 The present invention is described in further detail:

[0031] The research and development ideas of the present invention are as follows:

[0032] Temporary protective covers for buried pipelines, especially high-voltage cables, are relatively small, typically measuring only 20cm x 20cm or approximately similar in cross-sectional dimensions. Furthermore, the cover material must meet basic requirements for waterproofing, fireproofing, electrical protection, and corrosion resistance. Furthermore, the frame must also meet certain rigidity requirements to prevent accidental injuries during installation. Therefore, triple-proof fabric (PVC-coated fiberglass fabric, also known as five-proof fabric), which is typically waterproof, flame-retardant, electrical-proof, corrosion-resistant, and mildew-resistant, is the preferred cover material.

[0033] The application of three-proof fabric in pipeline protection covers presents at least two pressing technical challenges. First, the small size of the pipeline protection covers makes it difficult to connect the three-proof fabric to the frame by means of punching, strapping, riveting, etc. Second, the three-proof fabric does not easily bond with metal materials, but pipeline protection covers actually require rigid metal brackets.

[0034] The specific embodiments of the present invention are as follows:

[0035] The protective cover for an operating pipeline of the present invention is foldable and retractable in the longitudinal direction and has 360-degree spatial freedom in the transverse direction. The cover is composed of a flexible cover surface 1 and a plurality of metal composite liners 3.

[0036] The flexible cover 1 is a whole strip of three-proof cloth (five-proof cloth), which is fixed on a plurality of the metal composite liners 3 arranged at intervals by means of hot pressing and bonding.

[0037] See attached Figure 2 and 3 The metal composite liner 3 is composed of a sheet-like keel 32 and a heat-pressed adhesive 31. The sheet-like keel 32 has a pointed arch shape in its forward projection. The heat-pressed adhesive 31 is secured to the outer edge of the sheet-like keel 32. The heat-pressed adhesive 31 is preferably made of polyvinyl chloride or polyethylene. The sheet-like keel 32 is preferably made of aluminum, steel, or other hard alloys. As a further preferred measure, the sheet-like keel 32 has undergone corrosion protection treatment.

[0038] As a preferred implementation method, Figure 2 As shown, the heat-compression bonding member 31 is integrally injection-molded on the outer edge of the sheet-like keel 32 . Figure 3Another optional solution is shown, in which two pieces of heat-pressed adhesive 31 are pasted on the outer edges of the sheet-like keel 32 to form a "sandwich" structure at the edges of the sheet-like keel 32.

[0039] As a preferred means, a step structure (not shown) is provided at the outer edge of the sheet-like keel 32 so that the hot-pressed adhesive part 31 after injection molding or pasting is flush with the surface of the sheet-like keel 32 .

[0040] The sheet-like keel 32 has three straight outer edges, facilitating heat-compression bonding of the flexible cover 1 to the heat-compression bonding member 31 using a mold. After the first bonding step, the excess flexible cover 1 at the three corners of the sheet-like keel 32 is folded and then heat-compression bonded again. This bonding process is suitable for fully automated production line operation.

[0041] See again the attached Figure 1 The finished product of the "operating pipeline protection cover" of the present invention is retractable and foldable in its longitudinal direction (pipeline extension direction) and has 360-degree flexible freedom in the transverse direction, and can perfectly adapt to various construction environments under various terrains.

[0042] like Figure 1 and Figure 4 As shown, the operating pipeline protection cover of the present invention can be connected to each other for use. The metal composite lining 3 at both ends of a single operating pipeline protection cover, which is heat-pressed and bonded to the flexible cover surface 1, serves as the connecting flange 2. Connectors are used to connect adjacent connecting flanges 2 between two operating pipeline protection covers.

[0043] Attachment Figure 4 and attached Figure 5 The figure shows one of the assembly structures and connectors for connecting the protective covers of the running pipelines. The best connection method is to use only the accessories. Figure 5 The connecting sleeve 4 shown is hollow and open, with a central partition beam 41 dividing the interior of the sleeve into two receiving spaces. Openings 42 are provided on the side walls of the two receiving spaces facing the partition beam 41. During use, the lower ends of the connecting flanges 2 at opposite ends of the two operating pipeline protective covers to be connected are inserted into the two receiving spaces of the connecting sleeve 4. The openings 42 are used to accommodate the lower edge of the flexible cover 1, which is heat-pressed and bonded to the connecting flanges.

[0044] Furthermore, the connecting sleeve has at least one through-hole at the bottom of each of its two receiving spaces, which can be used as a fixing member to secure the operating pipeline protective cover of the present invention to the ground. Ground nails or anchor bolts are inserted through the through-holes in one receiving space of the connecting sleeve 4 to secure the connecting sleeve 4 to the ground. Then, the connecting flange 2 at one end of the operating pipeline protective cover of the present invention is inserted into the receiving space on the other side of the connecting sleeve 4 to secure one end of the operating pipeline protective cover to the ground.

[0045] See attached Figure 5 To further secure the connection between the operating pipeline protective covers, a connecting pin 4' can be used to securely connect the tops of the adjacent connecting flanges 2 of the two operating pipeline protective covers. This connection method requires a pre-set connection hole in the top of the connecting flange 2. It should be noted that the operating pipeline protective covers of the present invention can be connected using only the connecting sleeve 4. The connecting sleeve 4 is only shown in the drawings for structural purposes; its actual size is sufficient to effectively connect the two operating pipeline protective covers.

[0046] Attachment Figure 6 Another feasible connection structure of adjacent connecting flanges 2 is shown. A female clamp 43 and a male clamp 44 are set on the outer side of the connecting flange 2 (sheet keel 32) relative to the operating pipeline protection cover. The female clamp 43 and the male clamp 44 are respectively set on the adjacent sides of the two upright parallel sections of the connecting flange 2. This arrangement does not affect the combination of the hot press adhesive 31 and the sheet keel 32, nor does it affect the hot press combination of the flexible cover 1 and the metal composite liner 3. When two operating pipeline protection covers are connected, Figure 5 The connecting flanges 2 of adjacent sections of the structure shown are opposed to each other, and the two sets of female ferrules 43 and male clamps 44 are inserted into each other up and down to achieve a firm connection between the two operating pipeline protection covers.

[0047] Another feasible connection method is not shown in the figure, which is to replace the female ferrule 43 and the male clamp 44 of the above embodiment with a rubber strip with holes and a rubber strip with protruding buckles respectively, and press the adjacent connecting flanges 2 together to achieve a fixed connection between the two running pipeline protection covers.

[0048] As a preferred solution, the operating pipeline protection cover of the present invention also includes an attached Figure 1 The flake cover 5 shown in the figure has a shape that matches the top shape of the running pipeline protection cover and is used after the running pipeline protection cover is laid to enhance the protective performance of the top of the running pipeline protection cover. Preferably, the flake cover 5 is made of metal material.

[0049] The use process of the operating pipeline protection cover of the present invention is as follows:

[0050] First, use ground nails to fix two connecting sleeves 4 on the ground on both sides of the pipeline to be protected (such as a high-voltage cable, excavated or to be buried). Then, insert the lower end of the connecting flange 2 at one end of an operating pipeline protective cover into the two connecting sleeves 4 respectively. Then, stretch the operating pipeline protective cover along the pipeline. Then, plug another two connecting sleeves 4 into the lower end of the tail end connecting flange 2 of the first section of the operating pipeline protective cover, and insert the head end connecting flange 2 of the second section of the operating pipeline protective cover into the other two connecting sleeves 4. Then, lay the second section of the operating pipeline protective cover along the pipeline, and so on. At each required bend, it is also necessary to fix a connecting sleeve 4 on both sides of the pipeline, and insert the lower end of the metal composite liner 3 located at the bend into the connecting sleeve 4. The connecting sleeve 4 has openings 42 on both sides to accommodate the flexible cover 1, so as not to affect the insertion of any metal composite liner 3 combined with the flexible cover 1.

[0051] The operating pipeline protection cover of the present invention has at least the following advantages:

[0052] 1. It solves the problem of fixing the non-metallic cover and the metal frame in small size, while ensuring the structural strength of the protective cover.

[0053] 2. The design structure is suitable for automated production.

[0054] 3. The metal frame and flexible cover can be folded and unfolded freely in the longitudinal direction, which is easy to carry and transport.

[0055] 4. It has 360-degree spatial freedom in the horizontal direction and can adapt to any construction terrain.

[0056] 5. It has a simple connection structure, can be manufactured in units, can be extended and used infinitely, and can adapt to any pipeline length.

[0057] 6. It is easy to set up, easy to dismantle and can be reused, which greatly reduces the cost of use and is beneficial to the environment.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0059] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0060] The present invention is not limited to the above description of the embodiments. Any improvements and modifications made by those skilled in the art based on the contents disclosed by the present invention without creative work should be within the scope of protection of the present invention.

Claims

1. A protective cover for an operating pipeline, which is foldable and retractable in the longitudinal direction and has 360-degree spatial freedom in the transverse direction, characterized by: It consists of a flexible cover and several metal composite liners; The flexible cover is a whole strip of three-proof cloth, which is fixed to a plurality of the metal composite liners arranged at intervals by means of hot pressing and bonding; The metal composite lining is composed of a metal or hard alloy sheet keel and a hot-pressed bonding part; The flexible cover is fixed to the metal composite lining by the hot-pressing adhesive member; The hot-pressed adhesive component is integrally injection-molded on the outer edge of the sheet-like keel; The running pipeline protection cover also has a scale cover, which is arranged on the top of the flexible cover surface and has a shape that matches the shape of the flexible cover surface; Also includes connectors; The metal composite linings at both ends of the single operating pipeline protection cover, which are hot-pressed and bonded to the flexible cover surface, are used as connecting flanges; Connecting the adjacent connecting flanges between the two operating pipeline protection covers to each other using a connecting piece; The connecting piece is a connecting sleeve; The connecting sleeve is in the shape of a hollow open box, with a partition beam in the middle dividing the interior of the connecting sleeve into two accommodating spaces; The two accommodating spaces are respectively provided with openings on their side walls facing the partition beam; The bottoms of the two accommodating spaces are respectively provided with at least one through hole.

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