Modified polypropylene pipe for protecting high-voltage power cable
By setting up an adjustment mechanism on the modified polypropylene pipe for high-voltage power cable protection, the problem of existing cable protection pipes being easily broken after being compressed and deformed is solved, and the balanced distribution and uniform stress of the cable are ensured, which improves the practicality of cable protection.
Patent Information
- Application Number
- CN202421723293.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-20
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-20
AI Technical Summary
Existing cable protection pipes are prone to rupture after being compressed and deformed, and the horizontality of the pipe cannot be adjusted, resulting in the inability to ensure balanced distribution and uniform stress after the cable is placed.
A modified polypropylene pipe for high-voltage power cable protection is designed. By setting an adjustment mechanism on the pipe shell, including a fixing plate, an adjustment screw, a fixed bearing, an adjustment plate and a limiting plate, the horizontality of the pipe shell is allowed to be adjusted, thereby ensuring the balanced distribution of the cable and uniform stress.
Through the use of the adjustment mechanism, the pipe can be effectively avoided and the cable can be subjected to uniform stress after being placed, which improves the practicality and reliability of cable protection.
Smart Images
Figure CN222826964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable protection pipes, in particular to a modified polypropylene pipe for protecting high-voltage power cables. Background Art
[0002] Modified polypropylene pipe for high-voltage power cable protection is a high-quality material widely used in the field of cable protection. It is highly favored in the field of cable protection for its excellent performance, such as high strength, good high temperature resistance, easy cable laying, and simple construction. It is widely used in urban power cables, building water supply and drainage laying, etc., especially suitable for cable pipes for high-voltage transmission lines above 10KV. Its trenchless construction technology not only meets the development requirements of modern cities, but also has the advantages of no pollution to the environment, no impact on traffic, and little damage to the stratum structure, with significant social and economic benefits.
[0003] The existing cable protection tube has a relatively simple structure. Since most of them adopt a cylindrical structure design that can disperse pressure, the cylindrical structure is very easy to break after being deformed by pressure.
[0004] The existing patent (Announcement No.: CN216672493U) discloses a cable protection tube made of HDPE material, which includes a base tube body, wherein a plurality of first support plates are constructed in a ring array inside the base tube body, and a protective outer tube is constructed at one end of the plurality of first support plates away from the base tube body. It disperses the pressure through the protective outer tube with a plurality of first support plates constructed on the outer edge surface and the protective inner tube with a plurality of second support plates constructed on the outer edge surface in cooperation with the base tube body, and continues to provide protection for the cable through the protective outer tube and the protective inner tube when the base tube body is broken, thereby preventing the cable from being exposed and preventing the inflow of groundwater.
[0005] In response to the above problems, the solution given in the existing patent disperses the pressure by cooperating with the base tube body to avoid the rupture of the cylindrical structure after being compressed and deformed. However, after the installation is completed, the horizontality of the pipe cannot be adjusted, and the balanced distribution of the cables inside the pipe and the uniform stress on the cables cannot be ensured. Summary of the invention
[0006] The purpose of the utility model is to provide a modified polypropylene pipe for protecting high-voltage power cables, which can drive the adjustment plate to move vertically, and then adjust the horizontality of the entire pipe shell, so as to ensure the balanced distribution of cables inside the pipe and the uniform force of the cables, improve practicality, and solve the problems raised in the above-mentioned background technology.
[0007] To achieve the above object, the utility model provides the following technical solutions: A modified polypropylene pipe for protecting a high-voltage power cable, comprising a pipe shell, a reinforcing pipe is fixed to the inner wall of the pipe shell, and an adjustment mechanism for adjusting the horizontality of the pipe is fixed to the outer surface of the pipe shell;
[0008] The adjustment mechanism comprises a fixed plate, the inner wall of the fixed plate is threadedly connected with an adjustment screw, the end of the adjustment screw is sleeved with a fixed bearing, the outer wall of the fixed bearing is fixed with the adjustment plate, and a limit plate is fixed in the vertical direction on the right side of the adjustment plate.
[0009] Preferably, a limiting block is fixed to the upper end of the limiting plate, and the upper end of the limiting block is slidably connected to a sliding groove provided inside the fixed plate.
[0010] Preferably, a shielding tube is fixed to the inner wall of the reinforcing tube, and an insulating tube is fixed to the inner wall of the shielding tube.
[0011] Preferably, four reinforcing plates are symmetrically fixed to the inner wall of the insulating tube, and a tube inner shell is fixed to the inner walls of the four reinforcing plates.
[0012] Preferably, a sealing groove is formed at one end of the tubular shell.
[0013] Preferably, a sealing ring fixed to the other end of the tubular housing is connected to the interior of the sealing groove, and an interference fit is formed between the sealing ring and the sealing groove.
[0014] Preferably, a connecting ring is sleeved on the outer surface of the tubular shell.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. The adjustment mechanism can drive the adjustment plate to move vertically, thereby adjusting the overall horizontality of the pipe shell, thereby ensuring balanced distribution of cables inside the pipe and uniform stress on the cables, thus improving practicality;
[0017] 2. The sealing groove is provided to achieve a sealing effect. The connecting ring is provided at the connection between the two pipe shells, and then glue is used to fix the two pipe shells. The reinforcing tube provided on the inner wall of the pipe shell can enhance the overall strength of the pipe. With the cooperation of the shielding tube, it can achieve a shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is the overall structural view of the utility model;
[0020] Figure 2 It is a schematic diagram of the half-section structure of the tubular shell of the utility model;
[0021] Figure 3 It is a schematic diagram of a half-section structure of a fixed plate of the utility model;
[0022] Figure 4 It is a three-dimensional structural schematic diagram of the tubular shell of the utility model.
[0023] Description of reference numerals:
[0024] 1. Tube outer shell; 2. Reinforcement tube; 3. Fixing plate; 31. Adjusting screw; 32. Fixed bearing; 33. Adjusting plate; 34. Limiting plate; 35. Limiting block; 36. Slide groove; 4. Shielding tube; 5. Insulation tube; 6. Reinforcement plate; 7. Tube inner shell; 8. Sealing groove; 9. Sealing ring; 10. Connecting ring. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] The utility model provides a technical solution:
[0027] See also Figures 1 to 4 A modified polypropylene pipe for protecting a high-voltage power cable comprises a pipe shell 1, a reinforcing pipe 2 is fixed to the inner wall of the pipe shell 1, and an adjusting mechanism for adjusting the horizontality of the pipe is fixed to the outer surface of the pipe shell 1;
[0028] The adjustment mechanism includes a fixed plate 3, the inner wall of the fixed plate 3 is threadedly connected with an adjusting screw 31, the end of the adjusting screw 31 is sleeved with a fixed bearing 32, the outer wall of the fixed bearing 32 is fixed with an adjusting plate 33, a limit plate 34 is fixed in the vertical direction on the right side of the adjusting plate 33, a limit block 35 is fixed on the upper end of the limit plate 34, and the upper end of the limit block 35 is slidably connected with a slide groove 36 opened inside the fixed plate 3.
[0029] By adopting the above technical scheme, before using the modified polypropylene pipe for protecting the high-voltage power cable, the pipe shell 1 is first placed in a suitable position. Through the fixed plate 3 set on the pipe shell 1, the staff can screw the adjusting screw 31. With the cooperation of the fixed bearing 32, the adjusting screw 31 will not drive the adjusting plate 33 to rotate when rotating, so that the adjusting screw 31 drives the adjusting plate 33 to move vertically when rotating, and the set limit plate 34 and the slide groove 36 can play a guiding role. The set limit block 35 can limit the moving length of the limit plate 34, so as to avoid the limit plate 34 from falling off due to excessive movement, and then adjust the overall horizontality of the pipe shell 1, so as to ensure the balanced distribution of the cables inside the pipe and the uniform force of the cables, thereby improving practicality.
[0030] Specifically, Figure 1-Figure 4 As shown, a shielding tube 4 is fixed to the inner wall of the reinforcing tube 2, an insulating tube 5 is fixed to the inner wall of the shielding tube 4, four reinforcing plates 6 are symmetrically fixed to the inner wall of the insulating tube 5, a pipe inner shell 7 is fixed to the inner walls of the four reinforcing plates 6, a sealing groove 8 is opened at one end of the pipe outer shell 1, a sealing ring 9 fixed to the other end of the pipe outer shell 1 is connected to the inside of the sealing groove 8, the sealing ring 9 and the sealing groove 8 are interference fit, and a connecting ring 10 is sleeved on the outer surface of the pipe outer shell 1.
[0031] By adopting the above technical scheme, the sealing ring 9 on the second pipe shell 1 can be aligned with the sealing groove 8 on the first pipe shell 1 through the sealing groove 8 opened at one end of the pipe shell 1, so as to connect the two pipe shells 1 and play a sealing role to reduce the entry of rainwater, and the connecting ring 10 is sleeved on the connection between the two pipe shells 1, and then fixed with glue to fix the two pipe shells 1. The reinforcing tube 2 arranged on the inner wall of the pipe shell 1 can enhance the overall strength of the pipe, and with the cooperation of the shielding tube 4, it can play a shielding role. The insulating tube 5 arranged can insulate the cable and reduce the occurrence of leakage. With the cooperation of the reinforcing plate 6 and the pipe inner shell 7, it is convenient to limit the assembled cable for easy use.
[0032] Working principle: Through the fixed plate 3 set on the pipe shell 1, the staff can screw the adjusting screw 31. With the cooperation of the fixed bearing 32, the adjusting screw 31 will not drive the adjusting plate 33 to rotate when it rotates, so that the adjusting screw 31 rotates to drive the adjusting plate 33 to move vertically. The set limit plate 34 and the slide groove 36 can play a guiding role. The set limit block 35 can limit the moving length of the limit plate 34 to prevent the limit plate 34 from falling off due to excessive movement, and adjust the overall horizontality of the pipe shell 1 to ensure the balanced distribution of the cables inside the pipe and the uniform force of the cables, thereby improving practicality. In addition, the sealing groove 8 opened at one end of the pipe shell 1 The sealing ring 9 on the second pipe shell 1 can be aligned with the sealing groove 8 on the first pipe shell 1, and then the two pipe shells 1 can be connected and sealed to reduce the entry of rainwater. The connecting ring 10 is sleeved at the connection between the two pipe shells 1 and then fixed with glue to fix the two pipe shells 1. The reinforcing tube 2 arranged on the inner wall of the pipe shell 1 can enhance the overall strength of the pipe. With the cooperation of the shielding tube 4, it can play a shielding role. The insulating tube 5 can insulate the cable and reduce the occurrence of leakage. With the cooperation of the reinforcing plate 6 and the pipe inner shell 7, it is convenient to limit the assembled cable.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A modified polypropylene pipe for protecting a high-voltage power cable, comprising a pipe shell (1), characterized in that: A reinforcing tube (2) is fixed to the inner wall of the tubular shell (1), and an adjusting mechanism for adjusting the horizontality of the tubular is fixed to the outer surface of the tubular shell (1); The adjustment mechanism comprises a fixed plate (3), the inner wall of the fixed plate (3) being threadedly connected to an adjustment screw (31), the end of the adjustment screw (31) being sleeved with a fixed bearing (32), the outer wall of the fixed bearing (32) being fixed with an adjustment plate (33), and a limit plate (34) being fixed in a vertical direction on the right side of the adjustment plate (33).
2. A modified polypropylene pipe for high-voltage power cable protection according to claim 1, characterized in that: A limiting block (35) is fixed at the upper end of the limiting plate (34), and the upper end of the limiting block (35) is slidably connected to a sliding groove (36) provided inside the fixing plate (3).
3. The modified polypropylene pipe for protecting a high-voltage power cable according to claim 1, characterized in that: A shielding tube (4) is fixed to the inner wall of the reinforcing tube (2), and an insulating tube (5) is fixed to the inner wall of the shielding tube (4).
4. A modified polypropylene pipe for high-voltage power cable protection according to claim 3, characterized in that: Four reinforcing plates (6) are symmetrically fixed to the inner wall of the insulating tube (5), and a tube inner shell (7) is fixed to the inner walls of the four reinforcing plates (6).
5. The modified polypropylene pipe for high-voltage power cable protection according to claim 1, characterized in that: A sealing groove (8) is provided at one end of the tubular housing (1).
6. A modified polypropylene pipe for protecting a high-voltage power cable according to claim 5, characterized in that: The interior of the sealing groove (8) is connected to a sealing ring (9) fixed to the other end of the tubular housing (1), and the sealing ring (9) and the sealing groove (8) are interference-fitted.
7. The modified polypropylene pipe for high-voltage power cable protection according to claim 1, characterized in that: The outer surface of the tubular outer shell (1) is sleeved with a connecting ring (10).