Assembly connection type MPP cable tube with flame-retardant structure

Abstract

The utility model relates to the technical field of MPP cables, and discloses an assembly connection type MPP cable tube with a flame-retardant structure, which is characterized in that a threaded tube is arranged on the side surface of a tube body, a rubber plug is arranged on the side surface of a fixing ring, a pressure-resistant block is arranged on the inner side of an inner protective sleeve, an anti-corrosion layer is arranged on the inner side of the protective sleeve, and a flame-retardant layer is arranged on the side surface of the anti-corrosion layer; a damp-proof layer is arranged on the side of the flame-retardant layer. According to the assembly connection type MPP cable tube with the flame-retardant structure, the hardness of the protective sleeve and the hardness of the inner protective sleeve can be increased through the flame-retardant filler and the pressure-resistant block respectively, the situation that the cable core on the inner side is extruded and deformed when the protective sleeve is extruded by pressure can be avoided, and the service life of the cable core is effectively prolonged; and the flame-retardant layers and the waterproof layers at the two ends of the protective sleeve and the inner protective sleeve can prevent a fire source or water vapor from corroding the interior of the cable core, so that the service life of the cable core is effectively prolonged, the pipeline is prevented from being damaged due to damp when buried underground, and the service life of the pipeline is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of MPP cables, in particular to an assembled connection type MPP cable tube with a flame retardant structure. Background Art

[0002] MPP power pipes are divided into ordinary type and reinforced type. The reinforced type is further divided into trench pipes and trenchless pipes. The so-called MPP trenchless pipes are also called MPP jacking pipes, MPP pulling pipes, and MPP traction pipes.

[0003] The existing authorization announcement number is CN209994033U, which specifically refers to an MPP cable protection tube that is convenient for inserting cables. The cable moving auxiliary ring in the above document helps workers to insert the cable into the inner side of the MPP cable protection tube body, reduces the friction between the cable and the MPP cable protection tube body, and facilitates the workers' cable insertion work. However, during the use of the MPP cable protection tube in the above document, when the MPP cable protection tube is laid inside the surface, rainwater penetrates into the surface of the MPP cable protection tube through the soil, and rainwater has a certain corrosiveness, so that rainwater contacts the MPP cable protection tube for a long time, corrodes the surface of the MPP cable protection tube, and over time, it is easy to cause the MPP cable protection tube to be damaged and aged, so that the protection of the MPP cable protection tube to the cable is reduced, and it is easy to cause damage to the cable;

[0004] At the same time, the internal structure is relatively simple, which makes the pressure resistance of the MPP cable protection tube poor, so that the MPP cable protection tube is mostly stored in a stacking manner, so that the MPP cable protection tube is affected by the gravity of the stacked MPP cable protection tubes on the top, and it is very easy to be deformed by backlog. At the same time, when the MPP cable protection tube is buried underground, the weight of the vehicle itself when the vehicle is driving on it is easy to cause the MPP cable protection tube to be damaged and broken, thereby affecting the service life of the MPP cable protection tube. Now there is a need for an assembled and connected MPP cable tube with a flame retardant structure to solve the above technical solution. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an assembled connection type MPP cable pipe with a flame retardant structure, which can increase the hardness of the protective cover and the inner protective cover respectively through flame retardant fillers and pressure-resistant blocks, and can avoid extrusion and deformation of the inner cable core when the protective cover is subjected to pressure compression, thereby effectively extending the service life of the cable core; the flame retardant layer and the waterproof layer at both ends of the protective cover and the inner protective cover can prevent fire or water vapor from corroding the inside of the cable core, thereby effectively extending the service life of the cable core, and avoiding the pipeline from being broken due to moisture when buried underground, thereby effectively extending the service life of the pipeline, etc., thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembled and connected MPP cable pipe with a flame-retardant structure, comprising a protective sleeve, an inner protective sleeve is arranged on the inner side of the protective sleeve, a flame-retardant filler is arranged on the inner side of the protective sleeve, a cable core is arranged on the inner side of the inner protective sleeve, a tube body is arranged on the inner side of the protective sleeve, a second pipe is arranged on the side of the tube body, a fixing ring is arranged on the side of the second pipe, a threaded pipe is arranged on the side of the tube body, a rubber plug is arranged on the side of the fixing ring, a pressure-resistant block is arranged on the inner side of the inner protective sleeve, an anti-corrosion layer is arranged on the inner side of the protective sleeve, a flame-retardant layer is arranged on the side of the anti-corrosion layer, a moisture-proof layer is arranged on the side of the flame-retardant layer, a wear-resistant layer is arranged on the side of the moisture-proof layer, and a waterproof layer is arranged on the side of the wear-resistant layer.

[0009] Preferably, the inner protective sleeve is fixedly installed on the inner side of the protective sleeve, and a flame-retardant filler is fixedly connected between the protective sleeve and the outer wall of the inner protective sleeve, and a pressure-resistant block is fixedly connected between the cable core and the inner protective sleeve.

[0010] Through the above technical scheme, the flame retardant filler is filled inside the protective sheath to shape and protect the inner protective sheath and the cable core, and the pressure-resistant block inside the inner protective sheath can shape and limit the cable core. When the outside of the protective sheath is subjected to extrusion force, the flame retardant filler and the pressure-resistant block in the sheath can protect the cable core, thereby preventing the pipeline from being squeezed and causing the cable core to rupture, thereby effectively extending the service life of the cable core.

[0011] Preferably, the inner protective sleeve is fixedly installed on the inner side of the protective sleeve, and a flame-retardant filler is fixedly connected between the protective sleeve and the outer wall of the inner protective sleeve, and a pressure-resistant block is fixedly connected between the cable core and the inner protective sleeve.

[0012] Through the above technical scheme, the waterproof layer and the wear-resistant layer are respectively adhered to the outside of the protective cover, which can prevent the underground water vapor from corroding the inner wall of the pipeline and affecting the cable core. The flame retardant filler and the pressure-resistant block can prevent the fire from corroding the cable core, avoiding the damage and aging of the cable core caused by water vapor erosion, and at the same time can achieve a flame retardant effect.

[0013] Preferably, the fixing rings are connected by bolts, and the rubber plug is embedded in the inner wall of the fixing ring, the protective sleeve and the inner protective sleeve are respectively fixed at both ends to connect the anti-corrosion layer and the waterproof layer, the pressure-resistant blocks are respectively fixedly installed on the inner side of the inner protective sleeve, and the rubber plugs are respectively detachably installed on the side ends of the fixing rings.

[0014] Through the above technical scheme, the flame-retardant filler and the pressure-resistant block can increase the hardness of the protective cover and the inner protective cover respectively, and can prevent the inner cable core from being squeezed and deformed when the protective cover is subjected to pressure, thereby effectively extending the service life of the cable core. The flame-retardant layer and the waterproof layer at both ends of the protective cover and the inner protective cover can prevent fire or water vapor from corroding the inside of the cable core, thereby effectively extending the service life of the cable core, and avoiding the pipeline from being buried underground and ruptured due to moisture, thereby effectively extending the service life of the pipeline.

[0015] Preferably, the moisture-proof layer and the wear-resistant layer are fixedly connected.

[0016] Through the above technical solution, the pipe body drives the threaded pipe to be threadedly fixed with the second pipe, and when the pipes are connected, the fixing rings at the side ends of the pipes are fitted together, and the threads on the inner walls of the fixing rings are threadedly fixed with the corresponding bolts, thereby improving the sealing between the pipes and avoiding gaps between the pipes that affect the normal use of the pipes. The rubber plug can be used to fill the bolts on the inside of the threaded groove to avoid rusting caused by moisture.

[0017] Compared with the prior art, the utility model provides an assembled connection type MPP cable tube with a flame retardant structure, which has the following beneficial effects:

[0018] 1. The utility model can increase the hardness of the protective sleeve and the inner protective sleeve respectively through the flame-retardant filler and the pressure-resistant block, so as to avoid the inner cable core from being squeezed and deformed when the protective sleeve is subjected to pressure, thereby effectively extending the service life of the cable core. The flame-retardant layer and the waterproof layer at both ends of the protective sleeve and the inner protective sleeve can prevent the fire source or water vapor from corroding the inside of the cable core, thereby effectively extending the service life of the cable core, avoiding the pipeline rupture caused by the pipeline being buried underground and getting damp, thereby effectively extending the service life of the pipeline.

[0019] 2. The utility model drives the threaded pipe to be threadedly fixed with the second pipe through the pipe body, and the fixing rings at the side ends of the pipes are fitted together when the pipes are connected, and the threads on the inner wall of the fixing rings are threadedly fixed with the corresponding bolts, thereby improving the sealing between the pipes and avoiding gaps between the pipes that affect the normal use of the pipes. The bolts on the inner side of the threaded groove can be filled with rubber plugs to avoid rusting due to moisture. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 This is a schematic diagram of the side structure of the pipeline of the utility model;

[0022] Figure 3 This is a schematic diagram of the pipeline cross-section structure of the utility model.

[0023] Among them: 1. Protective cover; 2. Inner protective cover; 3. Flame retardant filler; 4. Cable core; 5. Pipe body; 6. Second pipeline; 7. Fixing ring; 8. Threaded pipe; 9. Rubber plug; 10. Pressure-resistant block; 11. Anti-corrosion layer; 12. Flame retardant layer; 13. Moisture-proof layer; 14. Wear-resistant layer; 15. Waterproof layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 A assembled connection type MPP cable pipe with a flame retardant structure comprises a protective sleeve 1, an inner protective sleeve 2 is arranged on the inner side of the protective sleeve 1, a flame retardant filler 3 is arranged on the inner side of the protective sleeve 1, a cable core 4 is arranged on the inner side of the inner protective sleeve 2, a tube body 5 is arranged on the inner side of the protective sleeve 1, a second pipe 6 is arranged on the side of the tube body 5, a fixing ring 7 is arranged on the side of the second pipe 6, a threaded pipe 8 is arranged on the side of the tube body 5, a rubber plug 9 is arranged on the side of the fixing ring 7, a pressure-resistant block 10 is arranged on the inner side of the inner protective sleeve 2, an anti-corrosion layer 11 is arranged on the inner side of the protective sleeve 1, a flame retardant layer 12 is arranged on the side of the anti-corrosion layer 11, a moisture-proof layer 13 is arranged on the side of the flame retardant layer 12, a wear-resistant layer 14 is arranged on the side of the moisture-proof layer 13, and a waterproof layer 15 is arranged on the side of the wear-resistant layer 14.

[0026] Specifically, the inner protective sleeve 2 is fixedly installed on the inner side of the protective sleeve 1, and the flame retardant filler 3 is fixedly connected between the protective sleeve 1 and the outer wall of the inner protective sleeve 2, and the pressure-resistant block 10 is fixedly connected between the cable core 4 and the inner protective sleeve 2. The advantage is that the flame retardant filler 3 is filled inside the protective sleeve 1 to shape and protect the inner protective sleeve 2 and the cable core 4, and the pressure-resistant block 10 inside the inner protective sleeve 2 can shape and limit the cable core 4. When the outer side of the protective sleeve 1 is squeezed and stressed, the flame retardant filler 3 and the pressure-resistant block 10 in the sleeve can protect the cable core 4, thereby preventing the cable core 4 from being ruptured due to squeezing of the pipeline, thereby effectively extending the service life of the cable core 4.

[0027] Specifically, the inner protective sleeve 2 is fixedly installed on the inner side of the protective sleeve 1, and the flame retardant filler 3 is fixedly connected between the protective sleeve 1 and the outer wall of the inner protective sleeve 2, and the pressure-resistant block 10 is fixedly connected between the cable core 4 and the inner protective sleeve 2. The advantage is that the outer edge of the protective sleeve 1 is respectively adhered with the waterproof layer 15 and the wear-resistant layer 14, which can prevent the underground water vapor from corroding the inner wall of the pipeline and affecting the cable core 4, and the flame retardant filler 3 and the pressure-resistant block 10 can prevent the fire from corroding the cable core 4, avoiding the damage and aging of the cable core 4 caused by water vapor erosion, and at the same time can achieve a flame retardant effect.

[0028] Specifically, the fixing rings 7 are connected by bolts, and the rubber plug 9 is embedded in the inner wall of the fixing ring. The two ends of the protective sleeve 1 and the inner protective sleeve 1 are respectively fixed to the anti-corrosion layer 11 and the waterproof layer 15, the pressure-resistant blocks 10 are respectively fixedly installed on the inner side of the inner protective sleeve 2, and the rubber plugs 9 are respectively detachably installed on the side ends of the fixing ring 7. The advantage is that the flame-retardant filler 3 and the pressure-resistant block 10 can increase the hardness of the protective sleeve 1 and the inner protective sleeve 2 respectively, and can prevent the inner cable core 4 from being squeezed and deformed when the protective sleeve 1 is subjected to pressure, thereby effectively extending the service life of the cable core 4, and the flame-retardant layer 12 and the waterproof layer 15 at both ends of the protective sleeve 1 and the inner protective sleeve 2 can prevent the fire source or water vapor from corroding the inside of the cable core 4, thereby effectively extending the service life of the cable core 4, and avoiding the pipeline rupture caused by the pipeline buried underground and damp, thereby effectively extending the service life of the pipeline.

[0029] Specifically, the moisture-proof layer 13 is fixedly connected to the wear-resistant layer 14. The advantage is that the pipe body 5 drives the threaded pipe 8 to be threadedly fixed with the second pipe 6, and the fixing rings 7 at the side ends of the pipes are fitted together when the pipes are connected, and the threads on the inner wall of the fixing ring 7 are threadedly fixed with the bolts, thereby improving the sealing between the pipes, avoiding gaps between the pipes that affect the normal use of the pipes, and the rubber plug 9 can be used to fill the bolts on the inner side of the thread groove to avoid rusting caused by moisture.

[0030] When in use, the flame retardant filler 3 is filled inside the protective sleeve 1 to shape and protect the inner protective sleeve 2 and the cable core 4, and the pressure-resistant block 10 inside the inner protective sleeve 2 can shape and limit the cable core 4. When the outside of the protective sleeve 1 is subjected to extrusion stress, the flame retardant filler 3 and the pressure-resistant block 10 in the sleeve can protect the cable core 4, thereby preventing the pipeline from being squeezed and causing the cable core 4 to rupture, thereby effectively extending the service life of the cable core 4. The outer edges of the protective sleeve 1 are respectively adhered to a waterproof layer 15 and a wear-resistant layer 14, which can prevent the underground water vapor from eroding the inner wall of the pipeline and affecting the cable core 4. The flame retardant filler 3 and the pressure-resistant block 10 can prevent fire from eroding the cable core 4, avoiding water vapor erosion and causing damage and aging of the cable core 4, and at the same time can achieve a flame retardant effect.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled connection type MPP cable tube with a flame retardant structure, comprising a protective sleeve (1), an inner protective sleeve (2) is arranged inside the protective sleeve (1), a flame retardant filler (3) is arranged inside the protective sleeve (1), a cable core (4) is arranged inside the inner protective sleeve (2), and a tube body (5) is arranged inside the protective sleeve (1), characterized in that: A second pipe (6) is arranged on the side of the pipe body (5), a fixing ring (7) is arranged on the side of the second pipe (6), a threaded pipe (8) is arranged on the side of the pipe body (5), a rubber plug (9) is arranged on the side of the fixing ring (7), a pressure-resistant block (10) is arranged on the inner side of the inner protective sleeve (2), an anti-corrosion layer (11) is arranged on the inner side of the protective sleeve (1), a flame-retardant layer (12) is arranged on the side of the anti-corrosion layer (11), a moisture-proof layer (13) is arranged on the side of the flame-retardant layer (12), a wear-resistant layer (14) is arranged on the side of the moisture-proof layer (13), and a waterproof layer (15) is arranged on the side of the wear-resistant layer (14).

2. The assembly-connected MPP cable tube with a flame-retardant structure according to claim 1, characterized in that: The inner protective sleeve (2) is fixedly installed on the inner side of the protective sleeve (1), and a flame retardant filler (3) is fixedly connected between the protective sleeve (1) and the outer wall of the inner protective sleeve (2), and a pressure-resistant block (10) is fixedly connected between the cable core (4) and the inner protective sleeve (2).

3. The assembly-connected MPP cable tube with a flame-retardant structure according to claim 1, characterized in that: The side ends of the tube body (5) and the second pipe (6) are respectively fixedly connected to the threaded tube (8), and the inner walls of the tube body (5) and the second pipe (6) are respectively provided with threads; the side ends of the tube body (5) and the second pipe (6) are respectively fixedly connected to the fixing ring (7), and the inner wall of the fixing ring (7) is provided with a thread groove.

4. The assembly-connected MPP cable tube with a flame-retardant structure according to claim 1, characterized in that: The fixing rings (7) are connected by bolts, and the rubber plug (9) is embedded in the inner wall of the fixing ring. The two ends of the protective sleeve (1) and the inner protective sleeve (2) are respectively fixed to the anti-corrosion layer (11) and the waterproof layer (15). The pressure-resistant blocks (10) are respectively fixedly installed on the inner side of the inner protective sleeve (2), and the rubber plugs (9) are respectively detachably installed on the side ends of the fixing ring (7).

5. The assembly-connected MPP cable tube with a flame-retardant structure according to claim 1, characterized in that: The moisture-proof layer (13) and the wear-resistant layer (14) are fixedly connected.

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