MPP cable protection pipe

Abstract

The utility model relates to an MPP cable protection pipe which comprises a protection pipe body, the protection pipe body comprises a connecting pipe and a connecting sleeve, the connecting pipe is a corrugated pipe, the corrugated pipe is provided with wave crests and wave troughs, the longitudinal section of each wave crest is quadrilateral, the longitudinal section of each wave trough is circular, and the waveform of the corrugated pipe is U-shaped. The connecting pipe has the advantages that the connecting pipe is the corrugated pipe, the longitudinal section of the wave crest of the corrugated pipe is of the quadrilateral structure, the longitudinal section of the wave trough of the corrugated pipe is circular, and the waveform of the corrugated pipe is U-shaped, so that the compressive strength of the connecting pipe in the vertical direction is greatly improved; the circular troughs uniformly disperse and counteract the force in the 360-degree direction, so that the ring stiffness of the connecting pipe is greatly improved and can reach more than 50 kN / m < 2 >, and the maximum burial depth can reach 16 m, and therefore, the connecting pipe can be directly stacked during installation and laying, a pipe pillow does not need to be used for fixing during installation and construction, the workload is greatly reduced, and the installation efficiency of operators is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of MPP cable protection pipe. BACKGROUND

[0002] Cable is a kind of electric energy or signal transmission device, usually by several or several groups of wires, MPP pipe is also called MPP power cable protection pipe, divided into excavation type and non-excavation type, MPP non-excavation pipe is also called MPP jacking pipe or drag pipe, MPP pipe uses modified polypropylene as main raw material, with the characteristics of high temperature resistance, external pressure resistance, suitable for 10KV below medium-low voltage transmission line cable pipe.

[0003] The existing MPP cable protection pipe basically adopts a circular pipe body, and a square pipe pillow is needed to be installed for fixation during installation. Due to the different installation levels of installers, the pipe pillow and the pipe body are not close enough in contact during the installation process, and the whole installation work is time-consuming and laborious, which greatly affects the installation efficiency of installers. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem of time-consuming and laborious of the existing MPP cable protection pipe during installation, and proposes a kind of MPP cable protection pipe. The connecting pipe is set as a corrugated pipe, and the wave crest longitudinal section of the corrugated pipe is set as a quadrilateral structure. Therefore, the pipes can be directly stacked during installation and laying, so that the pipe pillow is not needed for fixation during installation and construction, which greatly reduces the workload and improves the installation efficiency of workers.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical scheme: a kind of MPP cable protection pipe, including protection pipe body, the protection pipe body includes connecting pipe and connecting sleeve, one connecting pipe is installed at both ends of the connecting sleeve, the connecting pipe is corrugated pipe, the corrugated pipe has wave crest and wave trough, the wave crest is located at the maximum diameter of the outer wall of the corrugated pipe, the wave trough is located at the minimum diameter of the outer wall of the corrugated pipe, the longitudinal section of the wave crest is quadrilateral, the longitudinal section of the wave trough is circular, the wave shape of the corrugated pipe is U-shaped wave shape, the connecting pipe is provided with connecting head connected with the connecting sleeve, and sealing ring is arranged between the connecting head and the connecting sleeve.

[0006] Preferably, the diameter of the wave crest is equal to the outer diameter of the connecting sleeve.

[0007] Preferably, the connecting sleeve includes first semicircular connecting ring and second semicircular connecting ring, the first semicircular connecting ring and the second semicircular connecting ring form connecting hole matched with the connecting head, one end of the second semicircular connecting ring is rotatably connected to one end of the first semicircular connecting ring through hinge, and a fastener is arranged between the other end of the second semicircular connecting ring and the other end of the first semicircular connecting ring.

[0008] Preferably, the first semicircular connecting ring is provided with a first connecting groove, the second semicircular connecting ring is provided with a second connecting groove, the first connecting groove and the second connecting groove form the connecting hole, the other end of the first semicircular connecting ring and the other end of the second semicircular connecting ring are both provided with a connecting plate extending outward horizontally, and the two connecting plates are fixed and connected by the fasteners.

[0009] Preferably, the sealing ring is arranged on the connecting head, the outer side wall of the connecting head is provided with at least two fixed convex rings, each of the fixed convex rings is provided with a mounting groove for mounting the sealing ring, and the adjacent two fixed convex rings form a limiting ring groove, and the inner side wall of the first connecting groove and the inner side wall of the second connecting groove are both provided with a limiting convex ring matched with the limiting ring groove.

[0010] Preferably, the outer side wall of the connecting head is provided with a positioning ring groove, and the two ends of the first semicircular connecting ring and the two ends of the second semicircular connecting ring are both provided with a positioning convex ring matched with the positioning ring groove.

[0011] Preferably, the first semicircular connecting ring and the second semicircular connecting ring are both ABS connecting rings.

[0012] Preferably, the protective pipe body further comprises a connecting block, and the connecting head is provided with a third connecting groove matched with the connecting block.

[0013] Preferably, the third connecting groove is a dovetail groove.

[0014] Preferably, the connecting head and the connecting pipe are in an integrated structure.

[0015] In conclusion, the utility model discloses the advantages that: the protective tube body is set to the structure of connecting pipe and connecting sleeve, because the connecting pipe is set to the bellows, and the crest of the bellows is set to the quadrilateral structure in the longitudinal section, the trough of the bellows is set to the circle in the longitudinal section, the wave shape of the bellows is the U wave shape, greatly improve the compression strength of the connecting pipe in the vertical direction, simultaneously, the circular trough evenly disperses and offsets the force of 360 degrees direction, greatly improves the ring stiffness of the connecting pipe, can reach above 50kN / m2, the maximum burial depth can reach 16m, so when installing and laying, can directly stack, so when installing and constructing, need not to use the pipe pillow fixed, greatly reduces the workload, greatly improves the installation efficiency of operating personnel, also saves the pipe pillow, reduces the project cost, secondly, the structure that one connecting pipe is installed in both ends of the connecting sleeve greatly shortens the length of single connecting pipe, can guarantee the smoothness of the inner wall of the connecting pipe, facilitates the pulling of cable, also can adapt to different installation environment, finally, the connecting head that is connected with the connecting sleeve is equipped on the connecting pipe, because the sealing ring is set between the connecting sleeve and the connecting head, on the one hand can improve the contact area of the connecting pipe and the connecting sleeve, improves the reliability of the whole connection, on the other hand can guarantee the sealing property of the connecting sleeve and the connecting head, makes the whole protective tube body not appear the problems such as water leakage and seepage. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further explained in connection with the drawings:

[0017] Figure 1 It is the structure diagram of the utility model one kind MPP cable protection pipe;

[0018] Figure 2 It is Figure 1 The partial close-up view of I;

[0019] Figure 3 It is the structure diagram of the connecting sleeve in the utility model.

[0020] Reference signs:

[0021] 1 protective tube body, 2 connecting pipe, 3 connecting sleeve, 31 first semicircular connecting ring, 311 first connecting groove, 32 second semicircular connecting ring, 321 second connecting groove, 33 connecting hole, 34 hinge, 35 fastener, 36 connecting plate, 37 limit convex ring, 38 positioning convex ring, 4 connecting head, 41 fixed convex ring, 42 installation groove, 43 limit ring groove, 44 positioning ring groove, 45 third connecting groove, 5 sealing ring, 6 connecting block. SPECIFIC EMBODIMENTS

[0022] As Figure 1 , Figure 2 and Figure 3As shown, a kind of MPP cable protection pipe, including protection pipe body 1, the protection pipe body 1 includes connecting pipe 2 and connecting sleeve 3, connecting sleeve 3 is equipped with one connecting pipe 2 at both ends, the connecting pipe 2 is bellows, the bellows has wave crest and wave trough, the wave crest is located at the maximum diameter of bellows outer wall, wave trough is located at the minimum diameter of bellows outer wall, the longitudinal section of wave crest is quadrilateral, the longitudinal section of wave trough is circular, the wave shape of bellows is U-shaped wave, connecting head 44 connected with connecting sleeve 3 is equipped on the connecting pipe 2, sealing ring 5 is equipped between connecting head 44 and connecting sleeve 3.

[0023] The protection pipe body is set to the structure of connecting pipe and connecting sleeve, since connecting pipe is set to bellows, and the longitudinal section of wave crest of bellows is set to quadrilateral structure, the longitudinal section of wave trough of bellows is set to circular, the wave shape of bellows is U-shaped wave, the compressive strength of connecting pipe in vertical direction is greatly improved, at the same time, the force in 360 degrees direction is evenly dispersed and offset by circular wave trough, so that the ring stiffness of connecting pipe is greatly improved, and can reach more than 50 kN / m2, the maximum burial depth can reach 16m, so it can be directly stacked when installing and laying, so it does not need to use pipe pillow to fix when installing and constructing, greatly reduces the workload, greatly improves the installation efficiency of operating personnel, also saves pipe pillow and reduces engineering cost, secondly, the length of single connecting pipe is greatly shortened by the structure that one connecting pipe is equipped at both ends of connecting sleeve, can guarantee the smoothness of connecting pipe inner wall, facilitate the pulling of cable, also can adapt to different installation environment, finally, connecting head connected with connecting sleeve is equipped on connecting pipe, since sealing ring is set between connecting sleeve and connecting head, on the one hand, it can improve the contact area of connecting pipe and connecting sleeve, improve the reliability of overall connection, on the other hand, it can guarantee the sealing property of connecting sleeve and connecting head, so that the protection pipe body does not have the problems of leakage and seepage.

[0024] The diameter of the wave crest is equal to the outer diameter of the connecting sleeve 3. The structure that the diameter of the wave crest is equal to the outer diameter of the connecting sleeve 3 can ensure the stability of the overall structure and improve the overall installation strength. The connecting sleeve 3 comprises a first semicircular connecting ring 31 and a second semicircular connecting ring 32. The connecting hole 33 matched with the connecting head 44 is formed between the first semicircular connecting ring 31 and the second semicircular connecting ring 32. One end of the second semicircular connecting ring 32 is rotatably connected to one end of the first semicircular connecting ring 31 through the hinge 34. The other end of the second semicircular connecting ring 32 is provided with the fastener 35 between the other end of the first semicircular connecting ring 31. The connecting sleeve 3 is arranged as the first semicircular connecting ring 31 and the second semicircular connecting ring 32. Since one end of the second semicircular connecting ring 32 is rotatably connected to one end of the first semicircular connecting ring 31 through the hinge 34, only the first semicircular connecting ring 31 or the second semicircular connecting ring 32 needs to be rotated during installation and disassembly. Then the connecting hole 33 is installed on the connecting head 44. Finally, the locking of the second semicircular connecting ring 32 and the first semicircular connecting ring 31 is realized through the fastener 35. The overall installation and disassembly are convenient. The first connecting groove 311 is arranged on the first semicircular connecting ring 31. The second connecting groove 321 is arranged on the second semicircular connecting ring 32. The connecting hole 33 is formed between the first connecting groove 311 and the second connecting groove 321. The other end of the first semicircular connecting ring 31 and the other end of the second semicircular connecting ring 32 are each provided with a connecting plate 36 extending outwardly and horizontally. The two connecting plates 36 are fixedly connected through the fastener 35. The connecting hole 33 formed by the first connecting groove 311 and the second connecting groove 321 improves the installation quality of the connecting sleeve 3. In addition, the arrangement of the connecting plate 36 can increase the contact area of the fastener 35 and the connecting sleeve 3, which is convenient for operators to operate. The sealing ring 5 is arranged on the connecting head 44. At least two fixed protruding rings 41 are arranged on the outer side wall of the connecting head 44. The mounting groove 42 for mounting the sealing ring 5 is arranged on each fixed protruding ring 41. The limiting ring groove 43 is formed between the two adjacent fixed protruding rings 41. The limiting protruding ring 37 matched with the limiting ring groove 43 is arranged on the inner side wall of the first connecting groove 311 and the inner side wall of the second connecting groove 321. The sealing ring 5 is arranged on the connecting head 44, which is conducive to the installation and fixation of the sealing ring 5. Specifically, the installation groove 42 arranged on the fixed protruding ring 41 can simplify the installation process of the sealing ring 5 and improve the installation efficiency of the sealing ring 5. In addition, the limiting protruding ring 37 is clamped in the limiting ring groove 43 between the two adjacent fixed protruding rings 41, which can reduce the relative movement of the connecting sleeve 3 and the connecting head 44 during installation, improve the installation efficiency of the connecting sleeve 3, and ensure the straightness of the installation of the connecting sleeve 3.The outer side wall of the connecting head 44 is provided with a positioning ring groove 44, both ends of the first semicircular connecting ring 31 and both ends of the second semicircular connecting ring 32 are provided with positioning convex rings 38 abutting against the positioning ring groove 44, the connecting sleeve 3 is tightly fitted on the outer side wall of the connecting head 44 through cooperation of the positioning ring groove 44 and the positioning convex ring 38, penetration of soil or sundries is effectively hindered, and the reliability of the overall connection is improved.

[0025] The first semicircular connecting ring 31 and the second semicircular connecting ring 32 are ABS connecting rings, the first semicircular connecting ring 31 and the second semicircular connecting ring 32 are arranged as ABS connecting rings, which not only enables the entire connecting sleeve 3 to have good strength, heat resistance and flame retardation effect, but also facilitates processing and forming of the first semicircular connecting ring 31 and the second semicircular connecting ring 32. The protection pipe body 1 further comprises a connecting block 6, the connecting head 44 is provided with a third connecting groove 45 matched with the connecting block 6, and through cooperation of the connecting block 6 and the third connecting groove 45, butt joint of the two connecting pipes 2 is facilitated. The third connecting groove 45 is a dovetail groove, the third connecting groove 45 is arranged as a dovetail groove, which not only enables the connecting block 6 to be quickly installed and fixed, but also improves stability of the connecting head 44, effectively prevents deformation of the connecting head 44, and thus improves service life. The connecting head 44 and the connecting pipe 2 are of an integrated structure, the connecting head 44 and the connecting pipe 2 are arranged as an integrated structure, which can simplify installation process between the connecting head 44 and the connecting pipe 2, improve connection strength between the connecting head 44 and the connecting pipe 2, and meet installation requirements.

[0026] In addition to the above preferred embodiments, the utility model also has other implementation manners, and those skilled in the art can make various changes and deformation according to the utility model, as long as the changes and deformation do not deviate from the spirit of the utility model, and all should belong to the range defined by the claims of the utility model.

Claims

1. A MPP cable protection pipe comprising a protection pipe body (1), characterized in that: The protective tube body comprises a connecting pipe (2) and a connecting sleeve (3), both ends of the connecting sleeve are provided with a connecting pipe, the connecting pipe is a bellows pipe, the bellows pipe has a wave crest and a wave trough, the wave crest is located at the maximum diameter of the outer wall of the bellows pipe, and the wave trough is located at the minimum diameter of the outer wall of the bellows pipe, the longitudinal section of the wave crest is a quadrilateral, the longitudinal section of the wave trough is a circle, the wave shape of the bellows pipe is a U-shaped wave, the connecting pipe is provided with a connecting head (4) connected with the connecting sleeve, and a sealing ring (5) is arranged between the connecting head and the connecting sleeve.

2. The MPP cable protection pipe according to claim 1, characterized in that: The diameter of the wave crest is equal to the outer diameter of the connecting sleeve.

3. A MPP cable protection pipe according to claim 2, characterized in that: The connecting sleeve (3) comprises a first semicircular connecting ring (31) and a second semicircular connecting ring (32), a connecting hole (33) matched with the connecting head is formed between the first semicircular connecting ring and the second semicircular connecting ring, one end of the second semicircular connecting ring is rotatably connected to one end of the first semicircular connecting ring through a hinge (34), and the other end of the second semicircular connecting ring is provided with a fastener (35) between the other end of the first semicircular connecting ring.

4. An MPP cable protection pipe according to claim 3, characterized in that: The first semicircular connecting ring (31) is provided with a first connecting groove (311), the second semicircular connecting ring (32) is provided with a second connecting groove (321), the connecting hole is formed between the first connecting groove and the second connecting groove, and the other end of the first semicircular connecting ring and the other end of the second semicircular connecting ring are each provided with a connecting plate (36) extending outwardly and horizontally, and the two connecting plates are fixedly connected through the fastener.

5. An MPP cable protection pipe according to claim 4, characterized in that: The sealing ring is arranged on the connecting head, at least two fixed convex rings (41) are arranged on the outer side wall of the connecting head (4), an installation groove (42) for installing the sealing ring is arranged on each fixed convex ring, a limiting ring groove (43) is formed between the two fixed convex rings, and limiting convex rings (37) matched with the limiting ring groove are arranged on the inner side walls of the first connecting groove and the second connecting groove.

6. An MPP cable protection pipe according to claim 5, characterized in that: A positioning ring groove (44) is arranged on the outer side wall of the connecting head, and positioning convex rings (38) matched with the positioning ring groove are arranged at both ends of the first semicircular connecting ring and both ends of the second semicircular connecting ring.

7. An MPP cable protection pipe according to claim 4, characterized in that: The first semicircular connecting ring and the second semicircular connecting ring are both ABS connecting rings.

8. The MPP cable protection pipe according to claim 1, characterized in that: The protective tube body further comprises a connecting block (6), and the connecting head is provided with a third connecting groove (45) matched with the connecting block.

9. A MPP cable protection pipe according to claim 8, characterized in that: The third connecting groove is a dovetail groove.

10. The MPP cable protection pipe according to claim 1, characterized in that: The connecting head and the connecting pipe are in an integrated structure.

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