High-ring-stiffness pressure-resistant cable pipe and pipeline connecting device

Abstract

The utility model relates to the field of cable pipelines and pipeline fittings, in particular to a high-ring-stiffness pressure-resistant cable pipe which comprises a pipe body, spiral fibers and longitudinal fibers are arranged in the pipe body, the longitudinal fibers are arranged in the axial direction of the pipe body, the spiral fibers spirally extend in the circumferential direction of the pipe body, and at least two longitudinal fibers are arranged in the pipe body in a circumferential central symmetry mode. The spiral fiber is spirally wound outside the longitudinal fiber, and the pipe body wraps the spiral fiber and the longitudinal fiber to prevent the spiral fiber and the longitudinal fiber from being in direct contact with other objects. The ring stiffness and the longitudinal tensile strength of the high-ring-stiffness pressure-resistant cable tube are improved by utilizing the spiral fibers and the longitudinal fibers, and the high-ring-stiffness pressure-resistant cable tube is ensured to have relatively high toughness in a certain direction; under the premise that the ring stiffness and other strength tests are related to the construction quality acceptance standard of the ultra-high-speed railway electric power engineering and the like, the cable still has high toughness in one direction, and can be widely used in electric power transmission engineering in the fields of railways, highways, municipal roads and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cable conduit and conduit fittings, in particular to a high-ring-rigidity pressure-resistant cable conduit and conduit connecting device. BACKGROUND

[0002] The cable conduit is widely used in the field of power transmission. Compared with overhead cables, it occupies less space and has a high safety factor, so it is widely used in the power transmission of railways, highways and municipal roads, especially in the field of railways. The design of the cable conduit needs to meet the relevant standards such as the railway power design specification and the high-speed railway power engineering construction quality acceptance standard. The standard is more stringent than highways and municipal roads, so meeting the quality requirements of railway construction generally also meets the construction needs of highways and municipal roads. At present, the high-ring-rigidity pressure-resistant cable conduit is widely used in the field of railways. The mechanical strength and toughness of the conduit can be improved by using technology and formula, and it can withstand greater external force and impact, so the ring rigidity of the cable conduit is significantly higher than the relevant standards such as the high-speed railway power engineering construction quality acceptance standard. In addition, the existing cable conduit connection has poor sealing performance.

[0003] The patent with the Chinese patent number "CN2872038Y" entitled "Steel wire reinforced plastic pipe" discloses a conduit structure, but the pipe has low axial strength and is easy to bend.

[0004] The patent with the Chinese patent number "CN201982815U" entitled "High-strength anti-static pressure-resistant plastic pipe" discloses a fluid conduit, but the manufacturing process is complex and the manufacturing cost is high. Practical new type content

[0005] The present application provides a high-ring-rigidity pressure-resistant cable conduit and conduit connecting device to at least solve the stacking and connecting technical problems in the prior art.

[0006] According to the present application, a high-ring-rigidity pressure-resistant cable conduit is provided, which comprises a pipe body, a spiral fiber and a longitudinal fiber are arranged in the pipe body, the longitudinal fiber is arranged along the axial direction of the pipe body, the spiral fiber is arranged in a spiral along the circumferential direction of the pipe body, the longitudinal fiber is arranged in at least two and symmetrically arranged in the pipe body, the spiral fiber is spirally wound outside the longitudinal fiber, and the pipe body is wrapped outside the spiral fiber and the longitudinal fiber to avoid direct contact between the spiral fiber and the longitudinal fiber and other objects.

[0007] Compared with the prior art, the high ring stiffness pressure-resistant cable tube has the advantages that the spiral fibers and the longitudinal fibers increase the ring stiffness and the longitudinal tensile strength of the high ring stiffness pressure-resistant cable tube, the high ring stiffness pressure-resistant cable tube has high toughness in a certain direction, can be bent to a large arc during construction, and has high toughness in the certain direction under the premise that the ring stiffness strength test far exceeds the relevant standards such as the construction quality acceptance standard of high-speed railway power engineering, and the partial contradiction between toughness and strength is well solved.

[0008] In an implementation, the longitudinal fibers are uniformly distributed on both sides.

[0009] In an implementation, the high ring stiffness pressure-resistant cable tube comprises a tube body, a first tube end and a second tube end, the outer surface of the tube body is a cylindrical surface, the first tube end and the second tube end are located at both ends of the tube body, the outer surfaces of the first tube end and the second tube end are conical surfaces, the diameter of the first tube end gradually decreases so that the diameter near one end of the tube body is smaller than the diameter far from the one end of the tube body, and the diameter of the second tube end gradually decreases so that the diameter near one end of the tube body is smaller than the diameter far from the one end of the tube body. The circular high ring stiffness pressure-resistant cable tube will not accidentally roll when directly stacked, the stacking is more stable, auxiliary supports and other equipment are not needed, the height for taking and placing can be reduced without winding around the supports, the stacking is more convenient, and the logistics efficiency is improved.

[0010] In an implementation, the inner diameter and the outer diameter of the first tube end change synchronously, and the inner diameter and the outer diameter of the second tube end change synchronously, so that the processing is more convenient.

[0011] In an implementation, the first tube end far from the one end of the tube body is provided with a reinforcing section, and the diameter of the reinforcing section is the same as the maximum diameter of the first tube end, so that the shape of the end is more stable, and the situation of different sizes is avoided.

[0012] In an implementation, the inner wall is provided with a plurality of annular pits, the cables in the pipeline are easily pasted together after long-term placement in the pipeline, and the uneven structure can prevent the cables from being pasted to the cable pipeline.

[0013] The utility model provides a kind of pipe connecting device of high ring rigidity pressure-resistant cable pipe, for connecting above-mentioned cable pipe, including upper seat and lower seat, upper seat and lower seat can be spliced together to form connecting seat, connecting seat is equipped with first tube cavity, first conical cavity, second tube cavity and second conical cavity, first conical cavity and second conical cavity are all circular platform, first conical cavity and second conical cavity are equipped with large end and small end, the large end of first conical cavity and the large end of second conical cavity are adjacent, second tube cavity is located in the small end of second conical cavity, first tube cavity is located in the small end of first conical cavity, so that cable pipe connection can be more stable, existing pipe connecting device is generally set to horn opening of big outside and small inside, so as to facilitate splicing, but if sealing is to be realized, a large amount of glue is needed, which is very environmentally unfriendly, the technical scheme of the utility model can realize that two taper surfaces are closely attached, and good sealing performance can be realized without using a large amount of glue, so it is more environmentally friendly.

[0014] In an implementation, the connecting seat body is square, and adjacent connecting seats can be spliced through a splicing structure, which is a dovetail groove or dovetail tenon, so that splicing is more stable and convenient to install.

[0015] In an implementation, the lower seat is provided with a first lower side wall and a second lower side wall, the first lower side wall is higher than the second lower side wall, the first lower side wall is provided with at least two splicing structures, the second lower side wall is provided with at least one splicing structure and the number of splicing structures is less than that of the first lower side wall, the upper seat is provided with a first upper side wall and a second upper side wall, the first upper side wall is spliced with the first lower side wall, and the second upper side wall is spliced with the second lower side wall, the second upper side wall is provided with at least one splicing structure to realize splicing with the splicing structure of the adjacent first lower side wall, so that adjacent connecting seats can be spliced with each other, i.e., the upper seat and the lower seat are locked together to realize the function of limiting the connection of the cable pipe, and the connecting seat at the edge position can be provided with a locking structure to realize the limiting function of the upper seat and the lower seat, so that the entire cable pipe can form an integral structure to realize neat and equidistant arrangement, facilitating subsequent concrete backfilling and pouring construction.

[0016] In an implementation, the lower seat is provided with a bottom wall, and the upper seat is provided with a top wall, the bottom wall of the lower seat is provided with a splicing structure to realize splicing with the splicing structure of the adjacent top wall.

[0017] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the example embodiments of the present application will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0019] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0020] Figure 1 A schematic diagram of the end face structure of a high ring stiffness pressure-resistant cable conduit according to an embodiment of this application is shown;

[0021] Figure 2 A schematic diagram of the overall structure of the high ring stiffness pressure-resistant cable conduit according to an embodiment of this application is shown;

[0022] Figure 3 A schematic diagram of the stacking of high ring stiffness pressure-resistant cable ducts according to an embodiment of this application is shown;

[0023] Figure 4 A schematic diagram of the reinforced section structure of the high ring stiffness withstand voltage cable conduit according to an embodiment of this application is shown;

[0024] Figure 5 This illustration shows the structural composition of the high ring stiffness pressure-resistant cable conduit and pipe connection device according to an embodiment of this application. Figure 1 ;

[0025] Figure 6 This illustration shows the structural composition of the high ring stiffness pressure-resistant cable conduit and pipe connection device according to an embodiment of this application. Figure 2 ;

[0026] Figure 7 A front view of the composition structure of the high ring stiffness pressure-resistant cable pipe and pipe connection device according to an embodiment of this application is shown. Detailed Implementation

[0027] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Example 1:

[0029] like Figure 1As shown, a high-ring stiffness, high-voltage-resistant cable conduit includes a conduit body 1. The conduit body 1 contains helical fibers 11 and longitudinal fibers 12. The longitudinal fibers 12 are arranged axially upwards along the conduit body 1, while the helical fibers 11 extend spirally circumferentially along the conduit body 1. At least two longitudinal fibers 12 are arranged circumferentially and centrally symmetrically within the conduit body 1. The helical fibers 11 are spirally wound around the longitudinal fibers 12. The conduit body 1 wraps around the helical fibers 11 and longitudinal fibers 12 to prevent them from directly contacting other objects. The helical fibers 11 can be made of relatively stiff and high-strength inorganic fibers such as glass fiber, or other high-strength synthetic fibers. The longitudinal fibers 12 are made of synthetic fibers with a certain degree of elasticity. The strength of the helical fibers 11 is higher than that of the longitudinal fibers 12.

[0030] like Figure 1 As shown, longitudinal fibers 12 are evenly distributed on both sides, and can be set on the left and right sides or the top and bottom sides. Setting longitudinal fibers on one side can avoid large-scale bending. The inner wall 14 is provided with several annular recesses 15. The annular recesses 15 can be arranged at regular intervals. For ease of production, spiral recesses can be made to achieve the same technical effect.

[0031] The high ring stiffness pressure-resistant cable pipe with the structure completely exceeds the design requirements of cable pipe and meets the requirements of relevant standards such as railway power design specification and high-speed railway power engineering construction quality acceptance standard, and the experimental detection of the high ring stiffness pressure-resistant cable pipe meets the standards in the following table 1:

[0032] Table 1

[0033]

[0034] According to the relevant requirements of railway subgrade design load, for example, the design of railway subgrade cable trench (well) cover plate should consider the requirements of maintenance personnel passing and placing small road maintenance machinery. The standard value of maintenance personnel passing load is 3kN / m² uniform load; the standard value of small road maintenance machinery load is 1.5kN concentrated load. The load borne by the cable trench (well) itself is the static earth pressure of the subgrade fill, the static earth pressure coefficient is 0.45, the fill density is 22kN / m³, and the height of the cable trench is usually less than 1m, so the pressure intensity borne by the cable pipe is much smaller than 22kN / m², and therefore the ring stiffness requirement of the cable pipe is also much smaller than 22kN / m². The ring stiffness detection of the high ring stiffness pressure-resistant cable pipe meets the standards in the following table 2:

[0035] Table 2

[0036]

[0037] As shown in Figure 1 and Figure 2 , a high ring stiffness pressure cable pipe, comprising a pipe body 1, a first pipe end 2 and a second pipe end 3, the outer surface of the pipe body 1 is a cylindrical surface, the first pipe end 2 and the second pipe end 3 are located at both ends of the pipe body 1, the outer surface of the first pipe end 2 and the second pipe end 3 is a conical surface, the diameter of the first pipe end 2 gradually decreases so that the diameter near one end of the pipe body 1 is smaller than the diameter away from one end of the pipe body 1, and the diameter of the second pipe end 3 gradually decreases so that the diameter near one end of the pipe body 1 is smaller than the diameter away from one end of the pipe body 1. In this way, the cable pipe can form a shape of large at both ends and small in the middle, the taper angle is 3°-7°, and the two ends are slightly larger than the middle area to prevent rolling, of course, a larger angle can prevent rolling better, but the section cannot be fully utilized when the angle is larger, and needs to be cut off when in use, and a smaller angle can be directly connected with a tapered pipe connecting device, which will not waste materials and the connection performance is more stable. Figure 3 As shown in , such stacking of high ring stiffness pressure cable pipes does not require auxiliary supports and can be directly stacked and is not prone to rolling.

[0038] Figure 1 As shown in Figure 2 , the inner diameter and the outer diameter of the first pipe end 2 change synchronously, and the inner diameter and the outer diameter of the second pipe end 3 change synchronously.

[0039] As shown in Figure 4 , the first pipe end 2 is provided with a reinforcing section 4 away from one end of the pipe body 1, the diameter of the reinforcing section 4 is the same as the maximum diameter of the first pipe end 2, and the first pipe end 2 and the second pipe end 3 are generally formed by separately processing the pipe body 1 of the cable pipe by using online biaxial orientation co-extrusion technology, and then inserting a conical mold into the pipe when the pipe body 1 still has a certain temperature or heating the pipe body 1, so as to form the first pipe end 2 and the second pipe end 3 at the end of the pipe body 1, and the first pipe end 2 and the second pipe end 3 will shrink after being separated from the mold, therefore, the reinforcing section 4 can reduce the shrinkage and ensure the size of the first pipe end 2 and the second pipe end 3.

[0040] Example 2:

[0041] As shown in Figure 5 , Figure 6 and Figure 7As shown in the figure, a high ring stiffness pressure cable pipe connecting device for connecting the high ring stiffness pressure cable pipe of embodiment 1, comprising an upper seat 5 and a lower seat 6, the upper seat 5 and the lower seat 6 can be spliced together to form a connecting seat 7, the connecting seat 7 is provided with a first pipe cavity 71, a first tapered cavity 72, a second pipe cavity 73 and a second tapered cavity 74, the first tapered cavity 72 and the second tapered cavity 74 are both circular truncated cone-shaped, the first tapered cavity 72 and the second tapered cavity 74 are both provided with a large end 75 and a small end 76, the large end 75 of the first tapered cavity 72 and the large end 75 of the second tapered cavity 74 are arranged adjacent to each other, the second pipe cavity 73 is located at the small end 76 of the second tapered cavity 74, and the first pipe cavity 71 is located at the small end 76 of the first tapered cavity 72.

[0042] As shown in the figure, Figure 5 , Figure 6 and Figure 7 , the main body of the connecting seat 7 is square-shaped and adjacent connecting seats 7 can be inserted through the insertion structure 8, which is a dovetail groove 81 or a dovetail tenon 82.

[0043] As shown in the figure, Figure 5 , Figure 6 and Figure 7 , the lower seat 6 is provided with a lower pipe sleeve 65, a first lower side wall 61 and a second lower side wall 62, the axial length of the lower pipe sleeve 65 is greater than that of the first lower side wall 61 and the second lower side wall 62, the first lower side wall 61 is higher than the second lower side wall 62, the first lower side wall 61 is provided with at least two insertion structures 8, the second lower side wall 62 is provided with at least one insertion structure 8 and the number of insertion structures 8 is less than that of the first lower side wall 61, the upper seat 5 is provided with an upper pipe sleeve 55, a first upper side wall 51 and a second upper side wall 52, the first upper side wall 51 is spliced with the first lower side wall 61, the axial length of the upper pipe sleeve 55 is greater than that of the first upper side wall 51 and the second upper side wall 52, the second upper side wall 52 is spliced with the second lower side wall 62, and the second upper side wall 52 is provided with at least one insertion structure 8 to realize insertion with the insertion structure 8 of the adjacent first lower side wall 61. As shown in the figure, Figure 7 , during construction, the first locking block 9 is used to lock the first upper side wall 51 and the first lower side wall 61 on one side of the edge position, the first locking block 9 can be provided with multiple insertion structures 8 to simultaneously lock multiple first upper side walls 51 and first lower side walls 61, and the second locking block 10 is used to lock the second upper side wall 52 and the second lower side wall 62 on the other side. After the upper pipe sleeve 55 and the lower pipe sleeve 65 are installed together, the first pipe cavity 71, the first tapered cavity 72, the second pipe cavity 73 and the second tapered cavity 74 are formed.

[0044] As shown in the figure, Figure 5 , Figure 6 and Figure 7 , the lower seat 6 is provided with a bottom wall 63, the upper seat 5 is provided with a top wall 53, and the bottom wall 63 of the lower seat 6 is provided with an insertion structure 8 to realize insertion with the insertion structure 8 of the adjacent top wall 53.

[0045] High ring stiffness pressure cable pipe when leaving factory only two ends can be provided with the first pipe end 2 and the second pipe end 3, and part of the pipe section needs to be cut in actual use, so that the pipe body 1 may need to be processed on site to obtain the tapered first pipe end 2 or the second pipe end 3, and the processing tool is also very simple, that is, a tapered mold can be used, and of course the pipe body 1 needs to be heated, and the mold or other tools can be used, and the thickness of the pipe body 1 is more than 3 mm.

[0046] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A high hoop-stiffness pressure cable tube characterized by, The utility model provides a kind of high ring rigidity pressure-resistant cable pipe, including pipe body (1), spiral fiber (11) and longitudinal fiber (12) are equipped in the pipe body (1), the longitudinal fiber (12) is arranged in the axial direction of the pipe body (1), the spiral fiber (11) is arranged in the circumferential spiral extension of the pipe body (1), the longitudinal fiber (12) is at least equipped with two and is arranged in the pipe body (1) circumferentially central symmetry, the spiral fiber (11) is spirally wound outside the longitudinal fiber (12), the pipe body (1) is wrapped outside the spiral fiber (11) and the longitudinal fiber (12) to avoid the spiral fiber (11) and the longitudinal fiber (12) directly contact with other objects.

2. The high hoop stiffness pressure cable tube of claim 1, wherein, The longitudinal fibers (12) are evenly distributed on both sides.

3. The high hoop stiffness pressure cable tube of claim 1, wherein, The high ring rigidity pressure-resistant cable pipe includes a pipe body (1), a first pipe end (2) and a second pipe end (3). The outer surface of the pipe body (1) is a cylindrical surface. The first pipe end (2) and the second pipe end (3) are located at the two ends of the pipe body (1). The outer surfaces of the first pipe end (2) and the second pipe end (3) are conical surfaces. The diameter of the first pipe end (2) gradually decreases so that the diameter near one end of the pipe body (1) is smaller than the diameter far from the one end of the pipe body (1). The diameter of the second pipe end (3) gradually decreases so that the diameter near one end of the pipe body (1) is smaller than the diameter far from the one end of the pipe body (1).

4. The high hoop stiffness pressure cable tube of claim 3, wherein, The inner diameter and the outer diameter of the first pipe end (2) change synchronously, and the inner diameter and the outer diameter of the second pipe end (3) change synchronously.

5. The high hoop stiffness pressure cable tube of claim 4, wherein, The first pipe end (2) is provided with a reinforcing section (4) far from one end of the pipe body (1). The diameter of the reinforcing section (4) is the same as the maximum diameter of the first pipe end (2).

6. The high hoop stiffness pressure cable tube of claim 1, wherein, The inner wall (14) of the pipe body (1) is provided with a plurality of annular recesses (15).

7. A pipe coupling device for high hoop-stiffness pressure cable pipes, characterized in that The utility model provides a kind of high ring rigidity pressure-resistant cable pipe, including upper seat (5) and lower seat (6), the upper seat (5) and the lower seat (6) can be spliced together to form connecting seat (7), the connecting seat (7) is equipped with first pipe cavity (71), first conical cavity (72), second pipe cavity (73) and second conical cavity (74), the first conical cavity (72) and the second conical cavity (74) are all circular truncated cone, the first conical cavity (72) and the second conical cavity (74) are equipped with big end (75) and small end (76), the big end (75) of the first conical cavity (72) and the big end (75) of the second conical cavity (74) are adjacent, and the second pipe cavity (73) is located at the small end (76) of the second conical cavity (74), and the first pipe cavity (71) is located at the small end (76) of the first conical cavity (72).

8. The high hoop stiffness pressure cable tube pipe connection apparatus of claim 7, wherein, The main body of the connecting seat (7) is square, and adjacent connecting seats (7) can be inserted through the insertion structure (8). The insertion structure (8) is a dovetail groove (81) or a dovetail tenon (82).

9. The high hoop stiffness pressure cable tube pipe connection apparatus of claim 8, wherein, The lower seat (6) is provided with a first lower side wall (61) and a second lower side wall (62), the first lower side wall (61) is higher than the second lower side wall (62), the first lower side wall (61) is provided with at least two plug structures (8), the second lower side wall (62) is provided with at least one plug structure (8) and the number of plug structures (8) is less than that of the first lower side wall (61), the upper seat (5) is provided with a first upper side wall (51) and a second upper side wall (52), the first upper side wall (51) is spliced with the first lower side wall (61), the second upper side wall (52) is spliced with the second lower side wall (62), and the second upper side wall (52) is provided with at least one plug structure (8) and is inserted with the plug structure (8) of the adjacent first lower side wall (61).

10. The high hoop stiffness pressure cable tube pipe connection apparatus of claim 9, wherein, The lower seat (6) is provided with a bottom wall (63), the upper seat (5) is provided with a top wall (53), and the bottom wall (63) of the lower seat (6) is provided with the plug structure (8) and is inserted with the plug structure (8) of the adjacent top wall (53).

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