Excavation type MPP sheath pipe for power cable

Abstract

The utility model provides an excavation-type MPP protective sleeve for a power cable, and the MPP protective sleeve comprises a pipe body, the pipe body comprises a first splicing part and a second splicing part, the first splicing part is provided with a containing groove, the second splicing part is provided with a protruding part, when the end face of the first splicing part abuts against the end face of the second splicing part, the protruding part is embedded into the containing groove, and when the end face of the second splicing part abuts against the end face of the first splicing part, the protruding part is inserted into the containing groove. A plurality of bearing pads distributed at intervals are annularly arranged in the pipe body, the bearing pads are provided with concave parts for installing elastic supporting parts, when the cable is located in the pipe body, the periphery of the cable abuts against the inner walls of the bearing pads and buffer pads of the elastic supporting parts, and due to the fact that the buffer pads are connected with the elastic parts, when the pipe body collides and impacts the cable, the cable is prevented from being damaged. The multiple bearing pads distributed at intervals can disperse impact force, vibration energy is absorbed through the characteristics of the elastic pieces, vibration is prevented from being directly transmitted to the cable, therefore, the cable is protected and damped, and the situation that the impact force is directly transmitted to the cable position after the pipe body is collided, and the cable is damaged is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sheath pipes, in particular to an excavating MPP sheath pipe for power cables. BACKGROUND

[0002] The sheath pipe for power cables is specially used for protecting power cables and plays a key role in power transmission and distribution systems, which isolates the power cables from the surrounding environment and thus can adapt to different laying conditions. However, the existing sheath pipe only has the function of containing power cables, and in the construction process, the sheath pipe may be subjected to external forces such as excavation and rolling, thereby causing the power cables to be crushed or broken, resulting in damage to the power cables and reducing the overall service life of the power cables. In densely populated or flammable and explosive places such as urban power grids and factories, the electric sparks generated by the power cables are likely to cause fires or explosions, which affects the safety performance. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the above-mentioned problems and provides an excavating MPP sheath pipe for power cables.

[0004] The technical scheme of the application is implemented as follows:

[0005] The application provides an excavating MPP sheath pipe for power cables, which comprises a pipe body, the pipe body comprises a first splicing part and a second splicing part, and a cavity for accommodating a power cable is formed when the end faces of the first splicing part and the second splicing part abut.

[0006] The first splicing part is provided with a receiving groove, and the second splicing part is provided with a protruding part at a position corresponding to the receiving groove, the protruding part is embedded in the receiving groove when the end faces of the first splicing part and the second splicing part abut.

[0007] A bearing pad is arranged in the cavity, the bearing pad is provided with a plurality of recessed parts and is distributed along the length direction of the pipe body, the bearing pad is provided with an elastic supporting part in the recessed part, the elastic supporting part comprises an elastic member, one end of the elastic member is connected with the inner wall of the recessed part, and the other end is connected with a buffer pad, the buffer pad is close to or away from the recessed part through cooperation of the elastic member.

[0008] The recessed part is provided with a plurality of recessed parts and is distributed along the circumferential direction of the bearing pad, and when the power cable is located in the cavity, the outer periphery of the power cable abuts against the buffer pad.

[0009] In an embodiment, the outer periphery of the pipe body is provided with a reinforcing protrusion, and the reinforcing protrusion is provided with a plurality of reinforcing protrusions and is distributed along the circumferential direction of the pipe body.

[0010] The reinforcing protrusion is provided with a plurality of hook rope rings which are distributed along the length direction of the reinforcing protrusion and are arranged on both sides of the reinforcing protrusion, and the hook rope rings between two adjacent groups of reinforcing protrusions are connected through a cable.

[0011] The two adjacent groups of reinforcing protrusions form a protection area through cooperation of the cables.

[0012] In an embodiment, the two sides of the accommodating groove are provided with a plurality of spaced-apart clamping grooves, and the two sides of the protruding part are provided with clamping blocks matched with the clamping grooves.

[0013] The protruding part and the clamping block are integrally formed.

[0014] When the protruding part is embedded in the accommodating groove, the clamping block is embedded in the clamping groove.

[0015] In an embodiment, the two sides of the pipe body are sleeved with sealing pads, and the sealing pads have openings.

[0016] The sealing pad is further provided with an opening and closing gap, one end of the opening and closing gap is communicated with the opening, and the opening and closing gap is provided with a plurality of gaps uniformly distributed along the circumferential direction of the sealing pad.

[0017] In an embodiment, the side of the buffer pad away from the elastic member is provided with an arc-shaped end part, and when the buffer pad abuts against the cable, the arc-shaped end part abuts against the outer periphery of the cable.

[0018] In an embodiment, the size of the recess part is larger than the size of the buffer pad.

[0019] Through cooperation of the elastic member, the buffer pad is embedded in the recess part.

[0020] In an embodiment, the outer periphery of the pipe body is coated with a corrosion-resistant coating.

[0021] The advantages or beneficial effects of the above technical solutions at least include:

[0022] The excavated MPP sheath pipe for power cable can conveniently install the cable by dividing the pipe body into a first splicing part and a second splicing part, and the first splicing part and the second splicing part are respectively provided with an accommodating groove and a protruding part, which can ensure stability during installation. Since a plurality of spaced-apart bearing pads are arranged in the pipe body, the bearing pads can support the cable when the cable is located in the pipe body, and can disperse the impact received by the cable when the pipe body is impacted. Since the bearing pad has a recess part and is provided with an elastic supporting part, the buffer pad of the elastic supporting part abuts against the cable, and the buffer pad is connected with the elastic member. When impacted from outside, the elastic member can stretch and deform to absorb vibration energy, avoiding direct transmission of vibration to the cable. The bearing pad and the elastic supporting part can support and protect the cable in the pipe body, thereby solving the problem that the existing pipe body only has a containing function and cannot protect the cable, and the cable is easily damaged. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the application and together with the description serve to explain the principles of the application.

[0024] Figure 1 An exploded structural schematic view of the sheath pipe according to an embodiment of the present application is shown;

[0025] Figure 2 A structural schematic view of the sheath pipe according to an embodiment of the present application is shown from one perspective;

[0026] Figure 3 A partial cutaway structural schematic view of the sheath pipe according to an embodiment of the present application is shown;

[0027] Figure 4 A partial structural schematic view of the second splicing part according to an embodiment of the present application is shown;

[0028] Figure 5 An enlarged schematic view of position A in the embodiment of the present application is shown; Figure 1

[0029] An enlarged schematic view of position B in the embodiment of the present application is shown; Figure 6 Figure 3

[0030] Reference signs: 1, pipe body; 11, first splicing part; 111, accommodating groove; 1111, clamping groove; 12, second splicing part; 121, protruding part; 1211, clamping block;

[0031] 2, bearing pad; 21, recessed part;

[0032] 3, elastic support part; 31, elastic member; 32, buffer pad; 321, arc-shaped end part;

[0033] 4, reinforcing protrusion; 41, hooking rope ring;

[0034] 5, sealing pad; 51, opening; 52, opening and closing gap. DETAILED DESCRIPTION

[0035] Embodiments of the present application will be described in more detail by referring to the attached drawings. Although certain embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided so as to more completely and thoroughly understand the present application. It is understood that the drawings and embodiments of the present application are for exemplary purposes only and are not intended to limit the scope of protection of the present application.

[0036] ​​It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] It should be understood that the term "comprising" and variations thereof as used in the present application are open-ended, that is, "comprising but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions of other terms will be given in the following description. It should be noted that the "first", "second", etc. concepts mentioned in the present application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0038] It should be noted that the modification of "one" or "several" mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0039] The names of the messages or information exchanged between the devices in the embodiments of the present application are only for illustrative purposes, and are not used to limit the scope of the messages or information.

[0040] Reference Figures 1-6 A trench type MPP sheath pipe for power cable comprises a pipe body 1, the pipe body 1 comprises a first splicing part 11 and a second splicing part 12, a cavity for accommodating the cable to pass through is formed when the end faces of the first splicing part 11 and the second splicing part 12 abut, the first splicing part 11 and the second splicing part 12 form a split pipe body structure, at the construction site, the whole cable does not need to pass through the complete sheath pipe formed in advance, only the first splicing part 11 and the second splicing part 12 need to be placed on both sides of the cable, and then they are spliced, which greatly reduces the installation difficulty, and when a part is damaged, the whole pipe body 1 does not need to be replaced, only the damaged part corresponding to the splicing part needs to be disassembled for maintenance or replacement, which reduces the maintenance cost and time and improves the maintenance efficiency;

[0041] The first splicing part 11 has a receiving groove 111, and the second splicing part 12 is provided with a protruding part 121 at a position corresponding to the receiving groove 111, when the end faces of the first splicing part 11 and the second splicing part 12 abut, the protruding part 121 is embedded in the receiving groove 111, and through the cooperation of the protruding part 121 and the receiving groove 111, the stability of the pipe body 1 during installation is improved;

[0042] The cavity is provided with a plurality of bearing pads 2 which are arranged in the cavity and are spaced apart along the length direction of the pipe body 1. The bearing pads 2 are arranged to support the installed cable. The bearing pads 2 are provided with recesses 21. The recesses 21 are provided with elastic supporting components 3. The elastic supporting components 3 include elastic members 31 which are pressure springs or extension springs in the prior art. One end of the elastic member 31 is connected to the inner wall of the recess 21. The other end of the elastic member 31 is connected to a buffer pad 32 which is made of rubber. The buffer pad 32 is arranged to be close to or away from the recess 21 through the cooperation of the elastic member 31. The buffer pad 32 is provided with an arc-shaped end portion 321 on the side away from the elastic member 31. When the buffer pad 32 abuts against the cable, the arc-shaped end portion 321 is in contact with the outer periphery of the cable. Since the cross section of the cable is circular, the arc-shaped end portion 321 with a certain curvature is arranged on the buffer pad 32 in contact with the cable, so that the buffer pad 32 is better in contact with the cable, thereby further improving the contact between the buffer pad 32 and the cable.

[0043] The recesses 21 are arranged in a plurality of numbers and are spaced apart along the circumferential direction of the bearing pad 2. When the cable is located in the cavity, the outer periphery of the cable abuts against the buffer pad 32.

[0044] Based on the above structure, the cable is placed on the first splicing portion 11 or the second splicing portion 12, and the other splicing portion is installed in the cable. The protruding portion 121 is installed in the accommodating groove 111, so that the cable is located in the pipe body 1 formed by the two splicing portions. When the cable is located in the pipe body 1, the outer periphery of the cable is in contact with the inner wall of the bearing pad 2. The recesses 21 of the bearing pad 2 are provided with the elastic supporting components 3. Since the buffer pad 32 of the elastic supporting component 3 is connected to the elastic member 31, the buffer pad 32 is in abutment with the outer periphery of the cable under the cooperation of the elastic member 31. When the external environment is shaken, the elastic member 31 can absorb the vibration energy through the elastic deformation of itself. The buffer pad 32 made of rubber further buffers the vibration, so that the vibration is not directly transmitted to the cable. The plurality of bearing pads 2 and elastic supporting components 3 are spaced apart along the length direction of the pipe body 1, so that the cable is more uniformly stressed in the sheath pipe. The local stress is avoided to damage the cable, thereby improving the protection effect of the pipe body 1 on the cable and solving the problem that the internal cable is easily damaged due to the collision of the pipe body 1.

[0045] In one embodiment, refer to Figures 1-4The outer periphery of the pipe body 1 is provided with reinforcing protrusions 4, the reinforcing protrusions 4 are provided with a plurality of hook rope rings 41 distributed along the length direction of the reinforcing protrusions 4, the hook rope rings 41 between two adjacent groups of reinforcing protrusions 4 are connected by a cable, and the reinforcing protrusions 4 can form reinforcing ribs on the outer periphery of the pipe body 1 and can first contact the reinforcing protrusions 4 when the pipe body 1 is subjected to external impact, thereby avoiding direct impact on the pipe body 1.

[0046] The cable forms a protection area between the two adjacent groups of reinforcing protrusions 4, the cable can be a nylon rope with buffering and rebounding effects, and the two adjacent groups of hook rope rings 41 are connected by the cable, so that when an external object falls on the outer periphery of the pipe body 1, the object can be blocked by the cable to avoid direct contact with the pipe body 1, thereby further improving the protection effect of the pipe body 1.

[0047] In one embodiment, referring to Figures 1-5 The two sides of the accommodating groove 111 are provided with a plurality of spaced-apart clamping grooves 1111, the two sides of the protruding portion 121 are provided with clamping blocks 1211 matched with the clamping grooves 1111, the clamping blocks 1211 and the clamping grooves 1111 are both provided with a tapered structure, as the clamping blocks 1211 are gradually inserted into the clamping grooves 1111, the tapered structure generates a radial extrusion force, so that the connection between the clamping blocks 1211 and the clamping grooves 1111 is more compact, thereby forming a self-locking effect, which can effectively prevent the clamping blocks 1211 from being pulled out of the clamping grooves 1111 due to vibration, external force, etc. during use, thereby enhancing the stability of the connection between the first splicing portion 11 and the second splicing portion 12.

[0048] The protruding portion 121 and the clamping block 1211 are integrally formed, when the protruding portion 121 is embedded in the accommodating groove 111, the clamping block 1211 is embedded in the clamping groove 1111, and the protruding portion 121 and the clamping block 1211 are both made of rubber material and have certain ductility and deformation performance, the embedding of the clamping block 1211 in the clamping groove 1111 can improve the stability of the protruding portion 121 after being embedded in the accommodating groove 111, so that the installed pipe body 1 is not easy to shake, thereby avoiding deformation of the pipe body 1.

[0049] In one embodiment, referring to Figure 1 and Figure 2The two sides of the pipe body 1 are sleeved with sealing pads 5 made of rubber, the sealing pads 5 are provided with openings 51, and the sealing pads 5 are also provided with opening and closing gaps 52, one end of the opening and closing gaps 52 communicates with the openings 51, and the opening and closing gaps 52 are evenly distributed along the circumferential direction of the sealing pads 5. Due to the size difference of cables in different use scenarios, the openings 51 and the opening and closing gaps 52 can accommodate cables of different sizes, and when the cable passes through the opening 51, part of the sealing pad 5 will fit the outer circumference of the cable, thereby sealing and protecting the cable.

[0050] In one embodiment, referring to Figure 1 , Figure 3 and Figure 6 , the size of the recess 21 is larger than the size of the buffer pad 32, and the buffer pad 32 is embedded in the recess 21 by the cooperation of the elastic member 31. The larger area of the recess 21 provides a space for the buffer pad 32 to move, and when subjected to external impact, the buffer pad 32 has sufficient displacement allowance in the recess 21, and cooperates with the elastic deformation of the elastic member 31 to effectively disperse and absorb the impact force, preventing the buffer pad 32 from being displaced and reducing the buffering effect, and ensuring the stable protection of the cable.

[0051] In one embodiment, referring to Figure 1 and Figure 2 , the outer periphery of the pipe body 1 is coated with a corrosion-resistant coating, which can be any one of epoxy resin, polyurethane coating and polyethylene, and a curing agent can be added to adhere to the outer periphery of the pipe body 1 by coating or spraying, thereby improving the corrosion resistance of the pipe body 1 and preventing corrosion and damage of the pipe body 1 after being placed in the ground for a long time.

[0052] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present application, and are not intended to limit the scope of the present application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present application.

Claims

1. An excavated MPP sheathed pipe for power cables, characterized by: The pipe body comprises a first splice part and a second splice part, and a cavity for accommodating a cable is formed when the end faces of the first splice part and the second splice part abut; The first splice part is provided with a receiving groove, and the second splice part is provided with a protruding part corresponding to the position of the receiving groove, and the protruding part is embedded in the receiving groove when the end faces of the first splice part and the second splice part abut; The cavity is provided with a plurality of load pads distributed along the length direction of the pipe body, and the load pad is provided with a recess, and the recess is provided with an elastic supporting part, the elastic supporting part comprises an elastic piece, one end of the elastic piece is connected with the inner wall of the recess, and the other end is connected with a buffer pad, and the buffer pad is close to or away from the recess through the cooperation of the elastic piece; The recess is provided with a plurality of load pads distributed along the circumferential direction of the load pad, and when the cable is located in the cavity, the outer periphery of the cable abuts against the buffer pad.

2. The trenching type MPP sheathed pipe for power cables according to claim 1, characterized in that: The outer periphery of the pipe body is provided with a reinforcing protrusion, and the reinforcing protrusion is provided with a plurality of reinforcing protrusions distributed along the circumferential direction of the pipe body; The two sides of the reinforcing protrusion are provided with a plurality of hook rope rings distributed along the length direction of the reinforcing protrusion, and the hook rope rings between the two adjacent groups of reinforcing protrusions are connected by a cable; The protective area is formed between the two adjacent groups of reinforcing protrusions through the cooperation of the cable.

3. The trenching type MPP sheathed pipe for power cable according to claim 1, characterized in that: The two sides of the receiving groove are provided with a plurality of clamping grooves distributed at intervals, and the two sides of the protruding part are provided with clamping blocks matched with the clamping grooves; The protruding part and the clamping block are integrally formed; When the protruding part is embedded in the receiving groove, the clamping block is embedded in the clamping groove.

4. The trenching type MPP sheathed pipe for power cable according to claim 1, characterized in that: The two sides of the pipe body are provided with sealing pads, and the sealing pad is provided with an opening; The sealing pad is also provided with an opening and closing gap, one end of the opening and closing gap communicates with the opening, and the opening and closing gap is provided with a plurality of openings and closing gaps uniformly distributed along the circumferential direction of the sealing pad.

5. The trenching type MPP sheathed pipe for power cable according to claim 1, characterized in that: The arc-shaped end portion is provided on the side of the buffer pad away from the elastic piece, and the arc-shaped end portion is fitted with the outer periphery of the cable when the buffer pad abuts against the cable.

6. The trenching type MPP sheathed pipe for power cable according to claim 1, characterized in that: The size area of the recess is greater than the size area of the buffer pad; Through the cooperation of the elastic piece, the buffer pad is embedded in the recess.

7. The trenching type MPP sheathed pipe for power cable according to claim 1, characterized in that: The outer periphery of the pipe body is coated with a corrosion-resistant coating.

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