CN219204057U - Cable calandria that is favorable to improving cable current-carrying capacity - Google Patents

Abstract

The application discloses a cable calandria favorable for improving the current-carrying capacity of cables, which comprises a protective shell, wherein a plurality of pipe pillows are arranged in the protective shell, a plurality of threading holes and a plurality of ventilation holes are formed in each pipe pillow, and each threading hole is mutually independent of each ventilation hole; the cable pipes are penetrated through the threading holes, the two ends of each cable pipe are respectively spliced with a first connecting component and a second connecting component, and two adjacent cable pipes are connected through the first connecting components and the second connecting components which are spliced with each other; according to the cable pipe, a large number of cavities are formed between the cable pipes through the mutually separated threading holes, and compared with a traditional concrete or backfill structure, the heat conduction efficiency of air is higher; meanwhile, the convection of hot air between different areas is realized through the air holes, and the hot air in the cable rack can be guided to be discharged into the external atmosphere, so that the heat dissipation capacity of the cable rack is greatly improved, and the current carrying capacity and the power transmission capacity of the cable are improved.

Description

Cable calandria that is favorable to improving cable current-carrying capacity

Technical Field

The application relates to the technical field of power equipment, in particular to a cable duct which is beneficial to improving the current-carrying capacity of a cable.

Background

In the power line, the proportion of the cable is gradually increased, when the power cable passes through the load current, the conductor generates heat due to the impedance of the conductor, and the conductor is increased along with the increase of the load current, and meanwhile, the temperature inside the cable is also higher and higher along with the increase of the time.

After the interior of the cable heats, the temperature can be transmitted outwards along with each layer of medium of the cable, and the surface temperature of the cable is raised. According to a cable current-carrying capacity calculation formula, the cable current-carrying capacity laid in the traditional cable duct is calculated, and besides the thermal resistance of the pipe of the cable duct, concrete encapsulation and soil thermal resistance are calculated, so that the cable current-carrying capacity is greatly reduced, and the power transmission capacity of the power cable is seriously affected.

Disclosure of Invention

The utility model provides a main aim at provides a be favorable to improving cable calandria of cable current-carrying capacity, aims at solving the low defect of cable current-carrying capacity that exists among the prior art.

The utility model achieves the above object by the following technical scheme;

a cable duct which is beneficial to improving the current-carrying capacity of cables comprises a protective shell;

the tube pillows are sequentially arranged in the protective shell along the axial direction of the protective shell; a plurality of mutually independent threading holes are formed in each pipe pillow; a plurality of ventilation holes are also formed in each pipe pillow;

the cable pipes are arranged in the protective shell through the threading holes; the two ends of the cable tube are respectively spliced with a first connecting component and a second connecting component, and two adjacent cable tubes are connected through the first connecting component and the second connecting component which are mutually spliced.

Optionally, the protective housing includes a plurality of sections of boxes, each the both ends of box all are provided with the connection bead, and adjacent two be provided with mutually supporting connecting hole and connecting screw rod between the connection bead.

Optionally, each box body comprises a plurality of splice plates, and each splice plate is spliced end to form a closed annular structure.

Optionally, each splice plate is provided with splice teeth, and two adjacent splice plates are spliced by the engagement of the splice teeth.

Optionally, a plurality of support columns for supporting the cable tubes are arranged on the inner side of each splice plate; and clamping grooves for installing the pipe pillow are formed in the supporting columns.

Optionally, the ventilation holes comprise a first ventilation hole, a second ventilation hole and a third ventilation hole, the first ventilation hole is arranged between the threading holes, and the cross section of the first ventilation hole is round or square; the second air holes are arranged on the side edges of the pipe pillow, and the cross section of the second air holes is arc-shaped or semicircular; the third ventilation holes are arranged at four corners of the pipe pillow, and the cross section of the third ventilation holes is triangular.

Optionally, the first coupling assembling includes the backup pad, one side of backup pad is provided with a plurality of cable coupling, and the opposite side is provided with a plurality of first joints, each cable coupling with each first joint one-to-one, mutually corresponding cable coupling with first joint coaxial arrangement just link up each other.

Optionally, the second coupling assembling includes the backup pad, one side of backup pad is provided with a plurality of cable coupling, and the opposite side is provided with a plurality of second joints, each cable coupling with each second joint one-to-one, mutually corresponding cable coupling with the coaxial setting of second joint, and link up each other.

Optionally, the support plate includes first backup pad and the second backup pad of mutual separation, first backup pad and second backup pad link to each other through a plurality of connecting screw rods.

Optionally, the cable connector, the first connector and the second connector are all provided with drawing die inclined planes.

Compared with the prior art, the application has the following beneficial effects:

the air-conditioning device comprises a protective shell, wherein a plurality of pipe pillows are arranged in the protective shell along the axial direction of the protective shell, a plurality of threading holes and a plurality of ventilation holes are formed in each pipe pillow, and each threading hole and each ventilation hole are mutually independent; the cable pipes are penetrated through the threading holes, and meanwhile, a first connecting component and a second connecting component are respectively spliced at two ends of the cable pipes, and two adjacent cable pipes are connected through the first connecting component and the second connecting component which are spliced with each other;

compared with the prior art, each part related to the cable rack pipe is of a detachable structure, so that the cable rack pipe is convenient to transport, meanwhile, the cable rack pipe is convenient to assemble and combine on a construction site according to actual needs, and the adaptability of the cable rack pipe is greatly improved;

secondly, owing to be provided with a plurality of through wires holes on the pipe pillow, and mutually independent between each through wires hole, therefore it compares with traditional concrete cable duct, has a large amount of cavitys between the adjacent two cable ducts, can reduce the weight of whole cable duct on the one hand, makes things convenient for the hoist and mount of equipment, and on the other hand a large amount of cavitys have made things convenient for the inside air flow of cable duct, are favorable to three people, and the heat transfer efficiency of air is far above concrete simultaneously, can further improve the radiating efficiency of equipment, and then improves the current-carrying capacity and the transmission capacity of cable.

Meanwhile, the air holes are formed in the pipe pillow, the areas divided by the pipe pillow are communicated with each other through the air holes, so that air circulation among different areas in the protective shell is facilitated, meanwhile, the air holes at the head end and the tail end of the whole cable calandria are directly communicated with the external atmospheric environment, hot air in the protective shell is conveniently discharged, and the heat dissipation capacity of the whole cable calandria is further improved;

meanwhile, compared with the prior art, the cable calandria has the advantages of simple structure, high reliability and the like, thereby reducing the cost of the whole cable calandria.

Drawings

Fig. 1 is a schematic structural diagram of a cable duct that is beneficial to improving the current-carrying capacity of a cable according to embodiment 1 of the present application;

FIG. 2 is a schematic side view of the protective housing;

FIG. 3 is a top view of a splice plate;

FIG. 4 is a schematic view of the medial side of the splice plate;

FIG. 5 is a schematic view of a tube pillow structure;

FIG. 6 is a schematic view of a first connection assembly;

FIG. 7 is a schematic view of a second connection assembly;

reference numerals: 1-protective shell, 2-pipe pillow, 3-threading hole, 4-bleeder vent, 5-first coupling assembling, 6-second coupling assembling, 7-coupling hole, 8-connecting screw, 9-cable joint, 10-first joint, 11-second joint, 12-first backup pad, 13-second backup pad, 14-draft inclined plane, 101-connection bead, 102-splice plate, 103-splice tooth, 104-support column, 105-draw-in groove, 401-first bleeder vent, 402-second bleeder vent, 403-third bleeder vent.

The realization of the objects, the functional characteristics and the advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Embodiment 1

Referring to fig. 1 to 7, this embodiment, as an alternative embodiment of the present application, discloses a cable rack pipe that is beneficial to improving the current-carrying capacity of cables, including a protective housing 1 and a pipe pillow 2, where the protective housing 1 includes a plurality of sections of boxes, each section of boxes includes a plurality of splice plates 102, each splice plate 102 is provided with splice teeth 103 on its left and right sides, each splice plate 103 has a square or rectangular structure, two adjacent splice plates 102 are mutually engaged and spliced by the splice teeth 103, and each splice plate 102 is spliced end to form a square or rectangular structure, so as to form a box with a closed periphery and open front and rear sides;

connecting ribs 101 are arranged on the front side and the rear side of the box body, the connecting ribs 101 are arranged on the left side and the right side of the protective shell 1, a plurality of connecting screw holes are further formed in each connecting rib 101, the connecting ribs 101 between two adjacent box bodies are in one-to-one correspondence, and meanwhile, connecting screw rods 8 are arranged between the connecting screw holes corresponding to each other, so that all the box bodies are spliced in series;

meanwhile, waterproof rubber is filled between the splicing seams of the splice plates 102 and the box bodies so as to improve the waterproof performance of the whole protective shell 1;

the structure is simple, and the splicing is convenient; meanwhile, the splicing area between the splice plates 102 can be effectively increased through the meshing teeth, so that the splicing mode is simple and convenient, and the splicing strength is improved, and the strength of the whole protective shell 1 is improved;

a plurality of support columns 104 are arranged on the inner side of each splice plate 102, and the number of the support columns 104 is the same as the number of the cable tubes positioned on the outermost side, so that the top surface of each support column 104 is of an arc-shaped structure matched with the cable tubes, and each support column 104 corresponds to each cable tube one by one; after the assembly is completed, each cable pipe is respectively abutted against each support column 104, so that the support of the cable pipe is realized through the support columns 104, the load of the pipe pillow 2 is shared, and the service life of the pipe pillow 2 is prolonged;

each supporting column 104 is in a strip shape, each supporting column 104 is arranged parallel to the axial direction of the box body, a clamping groove 105 is further formed in each supporting column 104, and each pipe pillow 2 is respectively inserted into each clamping groove 105 so as to fix the pipe pillow 2;

the pipe pillow 2 is provided with a plurality of threading holes 3, the shape and the size of each threading hole 3 are matched with the size of the cable pipe, so that the cable pipe can be stably inserted into the threading holes 3, and meanwhile, the arrangement of each threading hole 3 is flexibly adjusted according to actual needs; the shape and the size of each threading hole 3 can be the same or different;

the pipe pillow 2 is also provided with a plurality of ventilation holes 4, the ventilation holes 4 comprise a first ventilation hole 401, a second ventilation hole 402 and a third ventilation hole 403, the first ventilation hole 401 is arranged between the threading holes 3, and the cross section of the first ventilation hole 401 is round or square; the second ventilation holes 402 are formed in the side edge of the pipe pillow 2, and the cross section of the second ventilation holes is circular arc or semicircular; the third ventilation holes 403 are arranged at four corners of the pipe pillow 2, and the cross section of the third ventilation holes is triangular;

the air holes 4 with different structures are adapted to the structures at the positions of the air holes, and meanwhile, the area of the air holes 4 can be improved to the greatest extent, so that the air permeability is improved, and the heat dissipation capacity is improved;

the front end and the rear end of the cable tube are respectively provided with a first connecting component 5 and a second connecting component 6, the first connecting component 5 comprises a supporting plate, the supporting plate comprises a first supporting plate 12 and a second supporting plate 13 which are mutually separated, a plurality of connecting holes 7 are respectively arranged on the first supporting plate 12 and the second supporting plate 13, and the connecting holes 7 are in one-to-one correspondence and are connected through connecting screws 8; the first support plate 12 is provided with a plurality of cable pipe joints 9, the arrangement of each cable pipe joint 9 is the same as that of the threading holes 3, the cable pipe joints 9 which correspond to each other one by one are coaxial with the threading holes 3; both ends of the cable pipe joint 9 are of an opening structure;

the second support plate 13 is provided with a plurality of first connectors 10, the first connectors 10 are of a tubular structure, the distribution of the first connectors 10 is the same as that of the cable pipe joints 9, and the first connectors 10 are in one-to-one correspondence with the cable pipe joints 9 and are coaxially arranged; both ends of the first joint 10 are of an opening structure;

when in installation, the first support plate 12 and the second support plate 13 are spliced with each other and fixedly connected through the connecting screw rod 8, and the cable pipe joint 9 and the second joint 11 which correspond to each other are coaxial and mutually communicated;

the second connecting component 6 comprises a supporting plate, the supporting plate also comprises a first supporting plate 12 and a second supporting plate 13 which are mutually separated, a plurality of connecting holes 7 are respectively arranged on the first supporting plate 12 and the second supporting plate 13, and the connecting holes 7 are in one-to-one correspondence and are connected through a connecting screw rod 8; the first support plate 12 is provided with a plurality of cable pipe joints 9, the arrangement of each cable pipe joint 9 is the same as that of the threading holes 3, the cable pipe joints 9 which correspond to each other one by one are coaxial with the threading holes 3; both ends of the cable pipe joint 9 are of an opening structure;

the second support plate 13 is provided with a plurality of second connectors 11, the second connectors 11 are of a tubular structure, the distribution of the second connectors 11 is the same as that of the cable pipe joints 9, and the second connectors 11 are in one-to-one correspondence with the cable pipe joints 9 and are coaxially arranged; both ends of the second joint 11 are of an opening structure;

the inner diameter of the cable fitting 9 is 0.1 to 0.2mm larger than the outer diameter of the cable tube to ensure that one end of the cable tube is inserted into the cable fitting 9; the outer diameter of the first connector 10 is 0.1 to 0.2mm smaller than the inner diameter of the second connector 11 to ensure insertion of the first connector 10 into the second connector 11;

simultaneously, the cable pipe joint 9, the first joint 10 and the second joint 11 are provided with drawing die inclined planes 14;

in the assembly process, the cable pipe joints 9 on the first connecting component 5 and the second connecting component 6 are respectively connected with two ends of the cable pipe in an inserting way; the two adjacent cable gauntlets are connected through a first connector 10 and a second connector 11 which are mutually spliced, so that different cable gauntlets are connected in series;

because the first supporting plate 12 and the second supporting plate 13 lead to the first connecting component 5 and the second connecting component 6 to be large in the middle and small in the two ends, the processing difficulty is high, the first connecting component 5 and the second connecting component 6 are designed to be of a split type structure through the first supporting plate 12 and the second supporting plate 13, and the processing difficulty of each component can be effectively reduced by combining the drawing inclined plane 14, so that the processing cost is reduced.

Compared with the prior art, each part related to the cable rack pipe is of a detachable structure, so that the cable rack pipe is convenient to transport, meanwhile, the cable rack pipe is convenient to assemble and combine on a construction site according to actual needs, and the adaptability of the cable rack pipe is greatly improved;

secondly, as the plurality of threading holes are formed in the pipe pillow and the threading holes are mutually independent, compared with the traditional concrete cable calandria, a large number of cavities exist between two adjacent cable pipes, so that on one hand, the weight of the whole cable calandria can be reduced, the hoisting of equipment is facilitated, on the other hand, the air flow in the cable calandria is facilitated by a large number of cavities, three persons are facilitated, meanwhile, the heat transfer efficiency of the air is far higher than that of the concrete, the heat dissipation efficiency of the equipment can be further improved, and the current carrying capacity of the cable is further improved;

meanwhile, the air holes are formed in the pipe pillow, the areas divided by the pipe pillow are communicated with each other through the air holes, so that air circulation among different areas in the protective shell is facilitated, meanwhile, the air holes at the head end and the tail end of the whole cable calandria are directly communicated with the external atmospheric environment, hot air in the protective shell is conveniently discharged, and the heat dissipation capacity of the whole cable calandria is further improved;

meanwhile, compared with the prior art, the cable calandria has the advantages of simple structure, high reliability and the like, thereby reducing the cost of the whole cable calandria.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims (10)

1. A cable duct advantageous for increasing the current-carrying capacity of cables, characterized in that it comprises a protective casing (1);

the tube pillows (2) are sequentially arranged in the protective shell (1) along the axial direction of the protective shell (1); a plurality of mutually independent threading holes (3) are arranged on each pipe pillow (2); a plurality of ventilation holes (4) are also formed in each pipe pillow (2);

the cable pipes are arranged in the protective shell (1) through the threading holes (3); two ends of the cable tube are respectively spliced with a first connecting component (5) and a second connecting component (6), and two adjacent cable tubes are connected through the first connecting component (5) and the second connecting component (6) which are spliced with each other.

2. A cable duct advantageous for improving the current-carrying capacity of cables according to claim 1, characterized in that said protective casing (1) comprises a plurality of sections of boxes, each of which is provided with a connecting rib (101) at both ends, and a connecting hole (7) and a connecting screw (8) are provided between two adjacent connecting ribs (101).

3. A cable duct arrangement for facilitating increased current carrying capacity of cables according to claim 2, wherein each of said housings comprises a plurality of splice plates (102), each of said splice plates (102) being spliced end to end into a closed loop configuration.

4. A cable duct advantageous for improving the current-carrying capacity of cables according to claim 3, characterized in that each splice plate (102) is provided with a splice tooth (103), and adjacent splice plates (102) are spliced by the splice teeth (103).

5. A cable duct assembly for facilitating the improvement of the current carrying capacity of cables according to claim 4, wherein a plurality of support columns (104) for supporting each of said cable ducts are further provided inside each of said splice plates (102); and clamping grooves (105) for installing the pipe pillow (2) are formed in the supporting columns (104).

6. A cable duct advantageous for increasing the current carrying capacity of cables according to claim 1, characterized in that said ventilation holes (4) comprise a first ventilation hole (401), a second ventilation hole (402) and a third ventilation hole (403), said first ventilation hole (401) being arranged between each of said threading holes (3) and having a circular or square cross section; the second ventilation holes (402) are formed in the side edges of the pipe pillow (2), and the cross section of the second ventilation holes is arc-shaped or semicircular; the third ventilation holes (403) are formed in four corners of the pipe pillow (2), and the cross section of the third ventilation holes is triangular.

7. A cable duct arrangement in favor of improving the current-carrying capacity of cables according to claim 1, characterized in that the first connecting assembly (5) comprises a supporting plate, a plurality of cable connectors (9) are arranged on one side of the supporting plate, a plurality of first connectors (10) are arranged on the other side of the supporting plate, the cable connectors (9) are in one-to-one correspondence with the first connectors (10), and the cable connectors (9) which are mutually corresponding are coaxially arranged with the first connectors (10) and are mutually communicated.

8. A cable duct arrangement in favor of improving the current-carrying capacity of cables according to claim 7, characterized in that the second connecting assembly (6) comprises a supporting plate, a plurality of cable connectors (9) are arranged on one side of the supporting plate, a plurality of second connectors (11) are arranged on the other side of the supporting plate, the cable connectors (9) are in one-to-one correspondence with the second connectors (11), and the cable connectors (9) which are mutually corresponding are coaxially arranged with the second connectors (11) and are mutually communicated.

9. A cable management tube advantageous for increasing the current capacity of a cable according to claim 7 or 8, characterized in that the support plates comprise a first support plate (12) and a second support plate (13) separated from each other, the first support plate (12) and the second support plate (13) being connected by means of a number of connecting screws (8).

10. A cable duct arrangement advantageous for improving the current-carrying capacity of cables according to claim 8, characterized in that the cable connection (9), the first connection (10) and the second connection (11) are each provided with a pattern drawing bevel (14).

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