CN218216446U

CN218216446U - Novel wear-resisting MPP electric power pipe of high resistance to compression

Info

Publication number: CN218216446U
Application number: CN202221920284.2U
Authority: CN
Inventors: 郑海日
Original assignee: Jinyang Plastic Pipe Co ltd
Current assignee: Jinyang Plastic Pipe Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-01-03
Anticipated expiration: 2032-07-21

Abstract

The utility model provides a novel wear-resisting MPP electric power pipe of high resistance to compression, it has solved the inside structural stability scheduling problem of electric power pipe, and it includes interior body, and interior body outside cover has outer body, is provided with the brace rod of I shape between interior body and the outer body, and the brace rod lower extreme passes through stop gear and is fixed with interior body joint, and the brace rod upper end is through grafting mechanism and outer body sliding connection, is provided with a plurality of backup pads between interior body and the outer body, and the backup pad passes through locking mechanism and brace rod fixed connection. The utility model has the advantages of good structural stability, difficult dislocation separation of the pipe body and the like.

Description

Novel wear-resisting MPP electric power pipe of high resistance to compression

Technical Field

The utility model belongs to the technical field of the electric power pipeline, concretely relates to novel wear-resisting MPP electric power pipe of high resistance to compression.

Background

The MPP pipe is also called MPP power cable protection pipe and is divided into excavation type and non-excavation type, and the MPP non-excavation pipe is also called MPP pipe or dragging pipe. The MPP pipe adopts modified polypropylene as a main raw material. The cable duct has the characteristics of high temperature resistance and external pressure resistance, and is suitable for medium and low voltage transmission lines and cables with the voltage below 10 KV. Compared with the traditional 'trenching and pipe burying method', the trenchless power pipe engineering is more suitable for the current environmental protection requirement, and removes the disturbing factors such as dust flying, traffic jam and the like caused by the traditional construction. However, the existing MPP pipes are generally buried in the ground of a building, and thus require high pressure resistance. In addition, the conventional double-layer pipe body structure cannot maintain the overall structural stability, and the inner structure is easy to dislocate and deform when the torsion is applied.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent literature discloses a high pressure resistant MPP power pipe [202122102508.0], which includes an inner pipe layer, an outer pipe layer, a flame retardant layer and a wear resistant layer, wherein the flame retardant layer is disposed between the inner pipe layer and the outer pipe layer, the flame retardant layer is provided with 8 i-shaped pressure resistant pipes which are horizontal to the cross section of the pipe body and are disposed at 45 ° intervals, and the wear resistant layer is disposed outside the outer pipe layer.

Above-mentioned scheme has solved the not enough problem of MPP pipe compressive strength to a certain extent, but this scheme still has a lot of not enough, for example the double-deck body structure receives to turn round easy dislocation deformation scheduling problem that takes place.

Disclosure of Invention

The utility model aims at the above-mentioned problem, a reasonable in design is provided, the wear-resisting MPP electric power pipe of novel high resistance to compression that is difficult for taking place the dislocation and warp.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model provides a novel wear-resisting MPP electric power pipe of high resistance to compression, includes interior body, and interior body outside cover has outer body, is provided with the brace rod of I shape between interior body and the outer body, and the brace rod lower extreme passes through stop gear and is fixed with interior body joint, and the brace rod upper end is provided with a plurality of backup pads through grafting mechanism and outer body sliding connection between interior body and the outer body, and locking mechanism and brace rod fixed connection are passed through to the backup pad. Set up the brace rod between the double-deck body and keep axial stability, the backup pad between guarantees circumferential stability, and grafting mechanism and stop gear between brace rod and the body and the locking mechanism between backup pad and the body guarantee its connected node's stable in structure for the difficult dislocation deformation separation that takes place of inner structure when power pipe bears great moment of torsion.

In foretell wear-resisting MPP electric power pipe of high resistance to compression, stop gear is including setting up the spacing muscle in the inner tube body outside, and spacing muscle arranges in pairs and along inner tube body axial extension, and the brace rod lower extreme is equipped with the spacing cambered surface with the laminating of inner tube body outer wall, and brace rod lower extreme joint is between spacing muscle. Spacing muscle and brace rod joint are spacing for the brace rod extends along the fixed axial direction of interior body.

In foretell wear-resisting MPP electric power pipe of novel high resistance to compression, grafting mechanism is including setting up the inserting groove at outer body inboard, and the inserting groove extends along outer body axial, and the brace rod upper end slides and pegs graft in the inserting groove. The insertion groove in the insertion mechanism is connected with the upper end of the support rib in a sliding mode and is arranged in pairs with the limiting rib.

In foretell wear-resisting MPP electric power pipe of high resistance to compression, the backup pad is the ring form and arranges with outer body axial along interior body, and locking mechanism is including setting up the locking groove in backup pad both sides, and the relative backup pad central symmetry in locking groove arranges, and the brace rod is pegged graft fixedly with the locking groove. The locking groove is used for inserting the supporting rib, the supporting rib is connected in a segmented mode, and the whole length of the pipe body is adjusted according to needs.

In foretell wear-resisting MPP electric power pipe of high resistance to compression, the one end both sides that the brace rod was pegged graft with the backup pad are provided with the extension board with the backup pad laminating respectively, and the extension board is fixed through screw and backup pad pressure fastening. The extension plate further improves the inserting stability of the support rib and the locking groove.

In foretell wear-resisting MPP electric power pipe of novel high resistance to compression, it has the through-hole that is central symmetric distribution to open in the backup pad, leaves the space respectively between the inside and outside of backup pad and interior body and the outer body. The through holes on the supporting plate and the gaps on the inner side and the outer side are used for air to normally flow, and the communication of the heat dissipation cavities between the pipe bodies is realized.

In foretell wear-resisting MPP electric power pipe of novel high resistance to compression, interior body and outer body end of body are closed by sealed lid, leave the heat dissipation chamber between the brace rod, and sealed lid seals the heat dissipation chamber, and sealed lid is opened has the vent with heat dissipation chamber and outside intercommunication. The air flow in the heat dissipation cavity is accelerated through the ventilation opening, so that the rapid heat dissipation and cooling of the power tube are realized, and the service life of the tube body is prolonged.

In foretell wear-resisting MPP electric power pipe of novel high resistance to compression, outer external wall cladding has fire-retardant layer and wearing layer in proper order, and outer internal wall coating has the dampproof course. The inner side and the outer side of the outer tube body are further subjected to plating treatment, so that the durability and the protection effect of the outer tube body are improved.

In foretell wear-resisting MPP electric power pipe of high resistance to compression, the stay tube is worn to be equipped with by interior internal side, and it has the bar groove to open on the stay tube, and the relative stay tube central symmetry in bar groove that same circumference position was arranged arranges, arranges and the bar groove staggered arrangement of adjacent setting along the axial, and stay tube thickness is greater than interior body. The stay tube plays the support conduct to the inner tube body, and the structural strength of stay tube is maintained when the radiating effect is guaranteed to the bar groove on its surface.

In foretell wear-resisting MPP electric power pipe of novel high resistance to compression, interior body and outer body adopt the polypropylene material, and the brace rod adopts the metal material. The inner pipe body and the outer pipe body have stronger corrosion resistance and waterproof effect, and effectively meet the outdoor use requirement of the power pipe.

Compared with the prior art, the utility model has the advantages of: supporting ribs and supporting plates are arranged between the double-layer pipe bodies, and meanwhile, the nodes are reinforced, so that the internal structure of the electric power is not easy to dislocate and separate; the heat dissipation cavities which are communicated one by one are arranged in the pipe body, and the ventilation openings which are communicated with the outside are arranged, so that the heat in the pipe body is quickly dissipated, and the practical service life of the pipe body is prolonged; the supporting pipe is arranged on the inner side of the inner pipe body, so that the structural strength of the inner pipe body is further improved, and the compression resistance of the inner pipe body is ensured.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of another viewing angle of the present invention;

fig. 3 is a schematic structural view of the support tube of the present invention;

fig. 4 is an assembly view of the support plate and the support rib of the present invention;

fig. 5 is a partial cross-sectional view of the present invention;

FIG. 6 is a schematic structural view of the supporting plate of the present invention

In the figure, an inner pipe body 1, a support pipe 11, a strip-shaped groove 12, an outer pipe body 2, a flame retardant layer 21, a wear-resistant layer 22, a moisture-proof layer 23, a support rib 3, an extension plate 31, a limiting mechanism 4, a limiting rib 41, a limiting cambered surface 42, a plugging mechanism 5, a plugging groove 51, a support plate 6, a through hole 61, a locking mechanism 7, a locking groove 71, a sealing cover 8, a heat dissipation cavity 81 and a ventilation opening 82.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a novel wear-resisting MPP electric power pipe of high resistance to compression, including interior body 1, the cover has outer body 2 in the 1 outside cover of interior body, is provided with I-shaped's brace rod 3 between interior body 1 and

outer body

2, and 3 lower extremes of brace rod are fixed with 1 joint of interior body through

stop gear

4, and 3 upper ends of brace rod pass through grafting mechanism 5 and outer body 2 sliding connection, are provided with a plurality of backup pads 6 between interior body 1 and outer body 2, and backup pad 6 passes through

locking mechanism

7 and 3 fixed connection of brace rod. Interior body 1 and outer body 2 center are coincided, the relative central axis symmetrical arrangement of brace rod 3 between, the last lower extreme of brace rod 3 respectively with interior body 1 and outer body 2 joint, it is stable to set up backup pad 6 between the brace rod 3 and maintain the circumference of interior body 1 and outer body 2,

brace rod

3 and 6 cooperation spaces between with interior body 1 and outer body 2 of backup pad are separated, the frame structure who forms guarantees that the electric power pipe has higher compressive strength, locking mechanism 7 guarantees the structural stability of

backup pad

6 and 3 connected node of brace rod simultaneously, the difficult dislocation separation of inner structure when the electric power pipe receives circumference torsion.

As shown in fig. 5, the limiting mechanism 4 includes limiting ribs 41 disposed on the outer side of the inner tube body 1, the limiting ribs 41 are disposed in pairs and extend along the axial direction of the inner tube body 1, a limiting arc surface 42 attached to the outer wall of the inner tube body 1 is disposed at the lower end of the supporting rib 3, and the lower end of the supporting rib 3 is clamped between the limiting ribs 41. Spacing muscle 41 and interior body 1 integrated into one piece, the support bar 3 upper and lower ends are the arc respectively and effectively laminate with the cambered surface of interior body 1 and interior body 1, and spacing muscle 41 is arranged and is realized that circumference is spacing in support bar 3 both sides.

Furthermore, the inserting mechanism 5 includes an inserting groove 51 disposed inside the outer tube 2, the inserting groove 51 extends along the axial direction of the outer tube 2, and the upper end of the support rib 3 is slidably inserted into the inserting groove 51. The insertion groove 51 is recessed relative to the inner wall of the outer tube 2, and applies a certain pre-tightening force to the outer tube 2 after sliding insertion.

As can be seen in fig. 5-6, the support plate 6 is circular and is axially arranged along the inner tube 1 and the outer tube 2, the locking mechanism 7 includes locking grooves 71 disposed at two sides of the support plate 6, the locking grooves 71 are symmetrically disposed with respect to the center of the support plate 6, and the support ribs 3 are inserted into the locking grooves 71. Body 1 and outer body 2 between including 6 equidistance arrangements of backup pad separate brace rod 3, do not influence the structural stability of other brace rods 3 when partial brace rod 3 dislocation deformation, and backup pad 6 is spacing fixed to 3 ends of brace rod simultaneously.

Furthermore, two sides of one end of the support rib 3 inserted into the support plate 6 are respectively provided with an extension plate 31 attached to the support plate 6, the extension plates 31 are pressed and fixed with the support plate 6 through screws, and the assembly structure is shown in fig. 4. The extension plates 31 at the ends of the support ribs 3 are in threaded connection with the support plates 6, so that the separation of the inner support ribs 3 when the pipe body is pulled is avoided, and meanwhile, the extension plates 31 keep the support ribs 3 vertically arranged relative to the support plates 6.

In addition, the supporting plate 6 is provided with through holes 61 which are distributed in central symmetry, and gaps are respectively reserved between the inner side and the outer side of the supporting plate 6 and between the inner pipe body 1 and the outer pipe body 2. The through holes 61 are uniformly distributed on the supporting plates 6, air normally flows between the supporting plates 6, and meanwhile, the inner pipe body 1 and the outer pipe body 2 are not in direct contact with the supporting plates 6, so that local pressure breakage of the pipe bodies is avoided.

As shown in fig. 1-2, the ends of the inner tube 1 and the outer tube 2 are sealed by a sealing cover 8, a heat dissipation chamber 81 is left between the support ribs 3, the sealing cover 8 seals the heat dissipation chamber 81, and the sealing cover 8 is provided with a vent 82 for communicating the heat dissipation chamber 81 with the outside. The sealing cover 8 seals the heat dissipation cavity 81 and then leaves the ventilation opening 82, and the air flow in the heat dissipation cavity 81 is accelerated by the external fan, so that the internal temperature of the pipe body is kept constant, and the service life of the pipe body is prolonged.

Visibly, the outer wall of the outer tube body 2 is sequentially coated with the flame retardant layer 21 and the wear-resistant layer 22, and the inner wall of the outer tube body 2 is coated with the moisture-proof layer 23. When the heat dissipation cavity 81 is broken and water enters, the inner pipe body 1 still has a waterproof effect and protects the cable inlet wire penetrating inside the inner pipe body.

Obviously, the inner side of the inner tube body 1 is penetrated with a supporting tube 11 as shown in fig. 3, the supporting tube 11 is provided with strip-shaped grooves 12, the strip-shaped grooves 12 arranged in the same circumferential direction are arranged in central symmetry relative to the supporting tube 11, the strip-shaped grooves 12 arranged axially and adjacently are arranged in a staggered manner, and the thickness of the supporting tube 11 is larger than that of the inner tube body 1. The supporting tube 11 is of a frame structure, the strip-shaped grooves 12 between the supporting tube and the supporting tube ensure that the internal cable can normally dissipate heat, and meanwhile, the strip-shaped grooves 12 distributed along the circumferential direction ensure that the supporting tube 11 can still bear larger radial pressure.

Preferably, the inner tube 1 and the outer tube 2 are made of polypropylene, and the support ribs 3 are made of metal. Interior body 1 and outer body 2 adopt modified polypropylene usually, and stainless steel or aluminum alloy are chooseed for use to brace rod 3.

In summary, the principle of the present embodiment is: set up between interior body 1 and outer body 2 along axially extended brace rod 3, arrange backup pad 6 between the brace rod 3 simultaneously and guarantee its circumference stability, set up additional strengthening respectively with the junction between interior body 1 and the outer body 2 between brace rod 3 and the backup pad 6, guarantee that the difficult dislocation of electric power pipe inner structure separates.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the inner tube 1, the support tube 11, the strip-shaped groove 12, the outer tube 2, the flame retardant layer 21, the wear-resistant layer 22, the moisture-proof layer 23, the support rib 3, the extension plate 31, the limiting mechanism 4, the limiting rib 41, the limiting arc surface 42, the inserting mechanism 5, the inserting groove 51, the support plate 6, the through hole 61, the locking mechanism 7, the locking groove 71, the sealing cover 8, the heat dissipation cavity 81, the ventilation opening 82, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a novel wear-resisting MPP electric power pipe of high resistance to compression, includes interior body (1), interior body (1) outside cover have outer body (2), its characterized in that, interior body (1) and outer body (2) between be provided with I shape brace rod (3), brace rod (3) lower extreme pass through stop gear (4) and fix with interior body (1) joint, brace rod (3) upper end through grafting mechanism (5) and outer body (2) sliding connection, interior body (1) and outer body (2) between be provided with a plurality of backup pads (6), backup pad (6) through locking mechanism (7) and brace rod (3) fixed connection.

2. The novel high-pressure-resistant and wear-resistant MPP power pipe as claimed in claim 1, wherein the limiting mechanism (4) comprises limiting ribs (41) arranged on the outer side of the inner pipe body (1), the limiting ribs (41) are arranged in pairs and extend axially along the inner pipe body (1), a limiting arc surface (42) attached to the outer wall of the inner pipe body (1) is arranged at the lower end of the supporting rib (3), and the lower end of the supporting rib (3) is clamped between the limiting ribs (41).

3. The novel high-pressure-resistant wear-resistant MPP electric power pipe as set forth in claim 1, wherein the inserting mechanism (5) comprises an inserting groove (51) formed inside the outer pipe body (2), the inserting groove (51) extends axially along the outer pipe body (2), and the upper end of the support rib (3) is slidably inserted into the inserting groove (51).

4. The novel high-pressure-resistant wear-resistant MPP power pipe as claimed in claim 1, wherein the support plate (6) is annular and is axially arranged along the inner pipe body (1) and the outer pipe body (2), the locking mechanism (7) comprises locking grooves (71) formed in two sides of the support plate (6), the locking grooves (71) are arranged in a central symmetry manner relative to the support plate (6), and the support ribs (3) are fixedly inserted into the locking grooves (71).

5. The novel high-pressure-resistant wear-resistant MPP power pipe as claimed in claim 4, wherein two sides of one end of the support rib (3) inserted into the support plate (6) are respectively provided with an extension plate (31) attached to the support plate (6), and the extension plates (31) are pressed and fixed with the support plate (6) through a screw.

6. The novel MPP power tube with high pressure resistance and wear resistance as claimed in claim 4, wherein the supporting plate (6) is provided with through holes (61) distributed in central symmetry, and gaps are respectively reserved between the inner side and the outer side of the supporting plate (6) and between the inner tube (1) and the outer tube (2).

7. The novel high-pressure-resistant wear-resistant MPP electric power pipe as set forth in claim 1, wherein the ends of the inner pipe (1) and the outer pipe (2) are closed by sealing covers (8), heat dissipation cavities (81) are left between the support ribs (3), the sealing covers (8) close the heat dissipation cavities (81), and the sealing covers (8) are provided with ventilation openings (82) for communicating the heat dissipation cavities (81) with the outside.

8. The novel high-pressure-resistant wear-resistant MPP power pipe as claimed in claim 1, wherein the outer wall of the outer pipe body (2) is sequentially coated with a flame-retardant layer (21) and a wear-resistant layer (22), and the inner wall of the outer pipe body (2) is coated with a moisture-proof layer (23).

9. The novel high-pressure-resistant wear-resistant MPP electric power pipe as set forth in claim 1, characterized in that a support pipe (11) is arranged inside the inner pipe body (1) in a penetrating manner, the support pipe (11) is provided with strip-shaped grooves (12), the strip-shaped grooves (12) arranged in the same circumferential direction are arranged in a central symmetry manner with respect to the support pipe (11), the strip-shaped grooves (12) are arranged in an axial direction and arranged adjacently, and the support pipe (11) is thicker than the inner pipe body (1).

10. The novel high-pressure-resistant and wear-resistant MPP power pipe as claimed in claim 1, wherein the inner pipe body (1) and the outer pipe body (2) are made of polypropylene, and the support ribs (3) are made of metal.