HFB corrugated power cable protection pipe with shielding protection function

Abstract

The utility model relates to bellows technical field especially, and it is a kind of HFB bellows power cable protection pipe with shielding protection function.The utility model provides a kind of HFB bellows power cable protection pipe with shielding protection function, solve the technical problem of the power protection pipe construction difficulty in prior art, connecting place shielding performance is poor.A kind of HFB bellows power cable protection pipe with shielding protection function, including pipe body;And connecting component, the connecting component connects the pipe body spliced at head and tail;By setting first shielding layer and second shielding layer, and, first shielding layer and the part of second shielding layer overlap, second shielding layer is set in intermediate piece, first shielding layer and second shielding layer overlap at the pipe body connection place spliced at head and tail, so that the shielding performance of power cable protection pipe is good, the shielding capacity of entire power cable protection pipe each part is uniform, optimizes the performance of power cable protection pipe.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe technology, and in particular to an HFB corrugated power cable protection pipe with shielding protection function. Background Technology

[0002] HFB corrugated pipe is a new type of plastic pipe used for the protection of power cables. It is made of polypropylene (MPP) as the main raw material and is made with a composite reinforced modified formula. It usually adopts a single-wall corrugated structure design and its Vicat softening temperature reaches above 120℃, which can be adapted to most power protection pipes.

[0003] Electrical protection pipes are typically installed by splicing corrugated pipes end to end. Current technology usually uses threaded connections for these corrugated pipes, which requires rotating the pipes during installation, making construction difficult. Furthermore, the connection points of electrical protection pipes often have poor shielding performance.

[0004] Therefore, existing power protection pipes suffer from technical problems such as difficult construction and poor shielding performance at the connection points. Summary of the Invention

[0005] This utility model provides an HFB corrugated power cable protection pipe with shielding protection function, which solves the technical problems of difficult construction and poor shielding performance at the connection of existing power protection pipes.

[0006] Some implementation schemes for solving the above-mentioned technical problems include:

[0007] A protective conduit for HFB corrugated power cables with shielding protection function, comprising a conduit body;

[0008] and connecting components, the connecting components connecting the ends of the pipe body;

[0009] The tube body is provided with a first shielding layer, which is a metal layer;

[0010] The connecting assembly includes a protruding ring disposed on the tube body, and the connecting assembly also includes a middle piece located between the two tube bodies spliced ​​end to end, and a screw is disposed between the protruding ring and the middle piece;

[0011] A limiting head is provided at the end of the screw away from the intermediate member. The limiting head is located on the side of the convex ring away from the intermediate member. The intermediate member is provided with a screw hole that mates with the screw.

[0012] The middleware is provided with a second shielding layer, and a portion of the first shielding layer overlaps with the second shielding layer.

[0013] Preferably, there are multiple screws, which are evenly arranged along the circumference of the intermediate member.

[0014] Preferably, the convex ring is provided with a through hole through which the screw passes, the through hole being provided in correspondence with the screw hole, and the inner circle diameter of the limiting head being larger than the diameter of the through hole.

[0015] Preferably, the convex ring and the tube body are integrally formed, and a reinforcing part is provided between the convex ring and the tube body to increase the connection strength between the convex ring and the tube body.

[0016] Preferably, the cross-sectional shape of the reinforcing part is a trapezoid that is narrower at the top and wider at the bottom, the convex ring and the reinforcing part are integral structures, and the reinforcing part and the tube body are integral structures.

[0017] Preferably, the second shielding layer is a metal layer, and the first shielding layer has at least two layers, and the second shielding layer has at least two layers.

[0018] Preferably, the intermediate component includes a first ring portion located between the two ends of the tube body, a portion of the second shielding layer is disposed in the first ring portion, the intermediate component also includes a second ring portion located outside the first ring portion, another portion of the second shielding layer is disposed in the second ring portion, and a portion of the two ends of the tube body extends into the second ring portion.

[0019] Preferably, the length of the first ring portion is less than the length of the second ring portion, and the plane of symmetry of the first ring portion along the length direction coincides with the plane of symmetry of the second ring portion along the length direction.

[0020] Preferably, the screw hole is disposed in the second ring portion, and the first ring portion and the second ring portion are an integral structure.

[0021] Preferably, both ends of the tube are provided with shoulders, the shoulders are integral with the tube, the shoulders extend into the second ring portion, the first shielding layer extends into the shoulders, the first ring portion is provided with annular protrusions, the annular protrusions are arranged along the axial direction of the first ring portion, and the shoulders are provided with annular grooves that cooperate with the annular protrusions.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] By setting a first shielding layer and a second shielding layer, and with the first shielding layer overlapping a portion of the second shielding layer, and the second shielding layer being located within the intermediate component, and the first shielding layer overlapping the second shielding layer at the connection point of the pipe body spliced ​​at both ends, the shielding performance of the power cable protection pipe is good, the shielding capability of all parts of the entire power cable protection pipe is uniform, and the performance of the power cable protection pipe is optimized.

[0024] By setting a convex ring and a screw, the pipe body is fixed to the intermediate part using the screw. This eliminates the need to damage the pipe body and rotate it during construction, making the power cable protection pipe easier to install and improving construction efficiency. Attached Figure Description

[0025] For illustrative purposes, several embodiments of the present invention are illustrated in the following figures. These figures are incorporated herein by reference and form part of the detailed description. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the subject matter of the present invention.

[0026] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the present invention.

[0028] Figure 3 This is an exploded view of the present invention.

[0029] Figure 4 This is a schematic diagram of the tube body at the first angle.

[0030] Figure 5 This is a schematic diagram of the second angle of the tube.

[0031] Figure 6 This is a schematic diagram of the middleware.

[0032] As shown in the figure:

[0033] 1. Tube body; 11. First shielding layer; 12. Protruding ring; 121. Through hole; 122. Reinforcing part; 13. Protruding shoulder; 131. Annular groove.

[0034] 2. Connecting component, 21. Intermediate component, 211. Screw hole, 212. Second ring, 213. First ring, 2131. Annular protrusion, 22. Screw, 221. Limiting head, 23. Second shielding layer. Detailed Implementation

[0035] The specific embodiments shown below are intended to describe various configurations of the subject matter of this invention and are not intended to represent the only configuration in which the subject matter of this invention can be practiced. The specific embodiments include detailed descriptions intended to provide a thorough understanding of the subject matter of this invention. However, it will be clear and apparent to those skilled in the art that the subject matter of this invention is not limited to the specific details shown herein and can be practiced without these specific details.

[0036] Understandably, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another, and are not intended to expressly or imply any actual relationship or order between these entities or operations.

[0037] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Reference Figures 1 to 6 As shown, an HFB corrugated power cable protection pipe with shielding protection function includes a pipe body 1;

[0039] and connecting component 2, which connects the pipe body 1 spliced ​​end to end;

[0040] The tube body 1 is provided with a first shielding layer 11, which is a metal layer.

[0041] The connecting component 2 includes a protruding ring 12 disposed on the tube body 1. The connecting component 2 also includes a middle part 21 located between the two tube bodies 1 spliced ​​end to end. A screw 22 is disposed between the protruding ring 12 and the middle part 21.

[0042] The screw 22 is provided with a limiting head 221 at one end away from the intermediate member 21. The limiting head 221 is located on the side of the convex ring 12 away from the intermediate member 21. The intermediate member 21 is provided with a screw hole 211 that mates with the screw 22.

[0043] The intermediate component 21 is provided with a second shielding layer 23, and a portion of the first shielding layer 11 overlaps with the second shielding layer 23.

[0044] Understandably, the intermediate component 21 is placed between the two pipe bodies 1 that are joined end to end. Then, the screw 22 is passed through the convex ring 12 so that the screw 22 engages with the screw hole 211 of the intermediate component 21. When the screw 22 is rotated, under the action of the limiting head 221, the limiting head 221 pushes the two pipe bodies 1 to move towards the intermediate component 21, thereby fixing the two pipe bodies 1.

[0045] Since the screw hole 211 is located on the intermediate part 21, the fixing can be completed without damaging the tube body 1, which makes the tube body 1 stable. At the same time, since the tube body 1 does not need to be rotated, the construction efficiency is effectively improved, making the power cable protection pipe easy to construct.

[0046] In some embodiments, there are multiple screws 22, which are evenly arranged along the circumference of the intermediate member 21. The number of screws 22 is not limited and can be reasonably determined as needed. For example, there can be eight screws 22, that is, each tube 1 is fixed to the intermediate member 21 by eight screws 22.

[0047] In some embodiments, the convex ring 12 is provided with a through hole 121 through which the screw 22 passes, the through hole 121 is provided corresponding to the screw hole 211, and the inner circle diameter of the limiting head 221 is larger than the diameter of the through hole 121.

[0048] Reference Figures 1 to 6 As shown, in some embodiments, the limiting head 221 can be an integral structure with the screw 22. The limiting head 221 can be provided with an operating part that facilitates the rotation of the screw 22. The operating part can be a polygonal operating block, in which case the limiting head 221 can replace the operating block. Alternatively, the operating part can also be a polygonal operating groove provided in the limiting block. The operating part cooperates with a tool to rotate the screw 22.

[0049] In some embodiments, the convex ring 12 and the tube body 1 are integrally formed, and a reinforcing part 122 is provided between the convex ring 12 and the tube body 1 to increase the connection strength between the convex ring 12 and the tube body 1.

[0050] The convex ring 12 is used to fix the intermediate part 21 to the tube body 1. Therefore, the convex ring 12 and the tube body 1 should have a high connection strength. The higher the connection strength between the convex ring 12 and the tube body 1, the higher the connection strength between the tube body 1 and the intermediate part 21.

[0051] The number of protruding rings 12 is not limited. One or more protruding rings 12 can be provided on each tube body 1, and the screw 22 passes through one or more protruding rings 12 at the same time.

[0052] In some embodiments, the cross-sectional shape of the reinforcing part 122 is a trapezoid that is narrower at the top and wider at the bottom, the convex ring 12 and the reinforcing part 122 are integral structures, and the reinforcing part 122 and the tube body 1 are integral structures.

[0053] The reinforcing part 122 can also be replaced by a rib plate, which is provided correspondingly to the through hole 121. The rib plate, the convex ring 12, and the tube body 1 are an integral structure.

[0054] Reference Figures 1 to 6As shown, in some embodiments, the second shielding layer 23 is a metal layer, the first shielding layer 11 has at least two layers, and the second shielding layer 23 has at least two layers.

[0055] The more first shielding layer 11 and second shielding layer 23 there are, the better the shielding performance.

[0056] In some embodiments, the intermediate component 21 includes a first ring portion 213 located between the end-to-end pipe bodies 1, a portion of the second shielding layer 23 is disposed in the first ring portion 213, the intermediate component 21 also includes a second ring portion 212 located outside the first ring portion 213, another portion of the second shielding layer 23 is disposed in the second ring portion 212, and a portion of the end-to-end pipe bodies 1 extends into the second ring portion 212.

[0057] In some embodiments, the length of the first ring portion 213 is less than the length of the second ring portion 212, and the plane of symmetry of the first ring portion 213 along the length direction coincides with the plane of symmetry of the second ring portion 212 along the length direction.

[0058] Reference Figures 1 to 6 As shown, in some embodiments, the screw hole 211 is disposed on the second ring portion 212, and the first ring portion 213 and the second ring portion 212 are an integral structure.

[0059] The second ring portion 212 should have sufficient strength and be resistant to deformation to improve the stability of the power cable protection pipe. Therefore, in some embodiments, the second ring portion 212 may be provided with ribs, which are integral with the second ring portion 212. The ribs are uniformly arranged along the circumference of the second ring portion 212. The length direction of the ribs is parallel to the axis of the second ring portion 212. The cross-sectional shape of the ribs can be polygonal.

[0060] In some embodiments, both ends of the tube body 1 are provided with shoulders 13, the shoulders 13 are integral with the tube body 1, the shoulders 13 extend into the second ring portion 212, the first shielding layer 11 extends into the shoulders 13, the first ring portion 213 is provided with annular protrusions 2131, the annular protrusions 2131 are arranged along the axial direction of the first ring portion 213, and the shoulders 13 are provided with annular grooves 131 that cooperate with the annular protrusions 2131.

[0061] The annular protrusion 2131 and the annular groove 131 make the power cable protection pipe easier to construct. When the annular protrusion 2131 and the annular groove 131 of the first ring 213 are engaged, the intermediate part 21 and the pipe body 1 are coaxial, which makes the construction of the power cable protection pipe very convenient.

[0062] The above describes the subject matter technical solution of this utility model and its corresponding details. It is understood that the above description is only some implementation schemes of the subject matter technical solution of this utility model, and some details may be omitted in the specific implementation.

[0063] Furthermore, in some embodiments of the above utility model, multiple embodiments may be combined; however, due to space limitations, all such combinations will not be listed here. Those skilled in the art can freely combine the above embodiments according to their needs to achieve a better application experience.

[0064] When implementing the subject matter technical solution of this utility model, those skilled in the art can obtain other detailed configurations or drawings based on the subject matter technical solution and the accompanying drawings. Obviously, these details are still within the scope of the subject matter technical solution of this utility model without departing from it.

Claims

1. A protective conduit for HFB corrugated power cables with shielding protection function, characterized in that: Includes a tube body (1); and a connecting component (2), the connecting component (2) connecting the two tube bodies (1) joined end to end; the tube body (1) is provided with a first shielding layer (11), the first shielding layer (11) being a metal layer; the connecting component (2) includes a convex ring (12) disposed on the tube body (1), and the connecting component (2) also includes a portion of an intermediate piece (21) located between the two tube bodies (1) joined end to end, the convex ring (12) and the intermediate piece (21) A screw (22) is provided between the two parts; a limiting head (221) is provided at one end of the screw (22) away from the intermediate part (21), the limiting head (221) is located on the side of the convex ring (12) away from the intermediate part (21), the intermediate part (21) is provided with a screw hole (211) that cooperates with the screw (22); a second shielding layer (23) is provided inside the intermediate part (21), and a part of the first shielding layer (11) overlaps with the second shielding layer (23).

2. The HFB corrugated power cable protection pipe with shielding protection function according to claim 1, characterized in that: There are multiple screws (22), and the multiple screws (22) are evenly arranged along the circumference of the intermediate member (21).

3. The HFB corrugated power cable protection pipe with shielding protection function according to claim 2, characterized in that: The convex ring (12) is provided with a through hole (121) through which the screw (22) passes. The through hole (121) is provided in correspondence with the screw hole (211). The inner circle diameter of the limiting head (221) is larger than the diameter of the through hole (121).

4. The HFB corrugated power cable protection pipe with shielding protection function according to claim 3, characterized in that: The convex ring (12) and the tube body (1) are integral structures, and a reinforcing part (122) is provided between the convex ring (12) and the tube body (1) to increase the connection strength between the convex ring (12) and the tube body (1).

5. The HFB corrugated power cable protection pipe with shielding protection function according to claim 4, characterized in that: The cross-sectional shape of the reinforcing part (122) is a trapezoid that is narrow at the top and wide at the bottom. The convex ring (12) and the reinforcing part (122) are an integral structure, and the reinforcing part (122) and the tube body (1) are an integral structure.

6. The HFB corrugated power cable protection pipe with shielding protection function according to claim 5, characterized in that: The second shielding layer (23) is a metal layer, the first shielding layer (11) has at least two layers, and the second shielding layer (23) has at least two layers.

7. The HFB corrugated power cable protection pipe with shielding protection function according to claim 1, characterized in that: The intermediate component (21) includes a first ring (213) located between the two ends of the tube body (1), a portion of the second shielding layer (23) is disposed in the first ring (213), the intermediate component (21) also includes a second ring (212) located outside the first ring (213), another portion of the second shielding layer (23) is disposed in the second ring (212), and a portion of the two ends of the tube body (1) extends into the second ring (212).

8. The HFB corrugated power cable protection pipe with shielding protection function according to claim 7, characterized in that: The length of the first ring portion (213) is less than the length of the second ring portion (212), and the plane of symmetry of the first ring portion (213) along the length direction coincides with the plane of symmetry of the second ring portion (212) along the length direction.

9. The HFB corrugated power cable protection pipe with shielding protection function according to claim 8, characterized in that: The screw hole (211) is provided on the second ring portion (212), and the first ring portion (213) and the second ring portion (212) are an integral structure.

10. The HFB corrugated power cable protection pipe with shielding protection function according to claim 9, characterized in that: Both ends of the tube body (1) are provided with shoulders (13). The shoulders (13) and the tube body (1) are integral structures. The shoulders (13) extend into the second ring portion (212). The first shielding layer (11) extends into the shoulders (13). The first ring portion (213) is provided with an annular protrusion (2131). The annular protrusion (2131) is arranged along the axial direction of the first ring portion (213). The shoulders (13) are provided with an annular groove (131) that cooperates with the annular protrusion (2131).

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