A modular splicing MPP cable protection pipe structure

Abstract

The present invention relates to a modular spliced ​​MPP cable protection tube structure in the field of cable protection tubes, comprising a cable main body, on which a plurality of modular protection tubes are sleeved, the modular protection tube comprising an inner sheath sleeved on the cable main body, the outer end of the inner sheath sleeved with an outer sheath; the inner sheath comprises a pair of semi-arc sleeves clamped to each other, a pair of clamping plates are fixedly connected to the surface of the semi-arc sleeves, and one end of the semi-arc sleeves is fixedly connected to a docking arc plate; the outer sheath comprises a pair of semi-arc tubes clamped to each other, and the inner sheath is tightly held after the pair of semi-arc tubes are clamped; an auxiliary docking plate is connected to one end of the semi-arc tube, and an auxiliary beam is fixedly connected to the middle of the surface of the semi-arc tube; a reinforced wiring harness is passed between the auxiliary beam and the auxiliary docking plate; double protection is provided for the cable through the inner sheath and the outer sheath, and docking reinforcement and structural abnormality detection are realized through the reinforced wiring harness, so as to ensure stable protection, facilitate timely maintenance of the protective sheath when it is abnormal, and easily ensure the safety of cable protection.

Description

Technical Field

[0001] The present invention relates to a modular spliced ​​MPP cable protection pipe structure, and in particular to a modular spliced ​​MPP cable protection pipe structure applied in the field of cable protection pipes. Background Art

[0002] MPP cable protection tube, as a high-performance protection material designed for power cables, occupies an important position in the fields of power, communication and urban construction with its unique material characteristics and technical advantages. Its main feature is that it uses modified polypropylene (MPP) as the main raw material. After special process modification, it not only inherits the original corrosion resistance and insulation performance of polypropylene, but also significantly improves key properties such as high temperature resistance, pressure resistance and creep resistance.

[0003] The advantages of MPP cable protection tubes are high strength, corrosion resistance, good insulation performance, and easy installation. It can effectively prevent cables from external mechanical damage, chemical corrosion, and water intrusion, thereby extending the service life of cables and ensuring the safety and reliability of power transmission. In addition, its hot-melt connection method makes the installation process simple and quick, and the connection is well sealed, further improving construction efficiency and safety.

[0004] In order to solve the problem of emphasis on protection of cable protection tubes, a certain cable protection tube in the market adopts a double-layer structure design and has a certain market share.

[0005] Chinese invention patent CN115621939B discloses a composite MPP power cable protection tube, including a protection tube shell, the protection tube shell includes a protection shell body, a shell placement cavity is provided on the top of the protection shell body, a positioning connection rod is fixedly connected to the bottom of the shell placement cavity, the two sides of the top of the protection shell body are fixedly connected to the shell connection outer wall, and a plurality of shell connection through holes are provided on the top of the shell connection outer wall; the invention is provided with a protection tube shell, which is conducive to placing the protection tube shell at the installation position of the laid pipeline according to the connection unit and the required length during the installation of the pipeline, and is conducive to realizing the modularization of the cable protection tube by separating the outer shell and the inner shell, which reduces the laying difficulty and increases the laying efficiency during the on-site laying process, and at the same time reduces the difficulty of transportation and avoids defects such as bending of internal components during transportation.

[0006] In terms of the butt reinforcement of the existing MPP cable protection tube, the main defects are loose connection and poor sealing. The butt joint is prone to loosening and misalignment after long-term use. The butt joint is easily affected by external force and becomes loose or leaks, which seriously affects the protection effect of the cable and may accelerate the aging of the cable and reduce its service life. The stability of the existing MPP cable protection tube is poor, and there are no measures on the protection tube to facilitate the detection or monitoring of abnormalities at the butt joint. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing MPP cable protection tube has poor stability at the joint, and there is no convenient measure on the protection tube to detect or monitor abnormalities at the joint.

[0008] In order to solve the above problems, the present invention provides a modular spliced ​​MPP cable protection tube structure, including a cable body, a plurality of modular protection tubes are sleeved on the cable body, the modular protection tubes include an inner sheath sleeved on the cable body, and an outer sheath is sleeved on the outer end of the inner sheath;

[0009] The inner sheath comprises a pair of semi-arc sleeves clamped to each other, a pair of clamping plates are fixedly connected to the surface of the semi-arc sleeves, and one end of the semi-arc sleeves is fixedly connected to a docking arc plate;

[0010] The outer sheath comprises a pair of semi-arc tubes that are clamped together, and the inner sheath is tightly held after the pair of semi-arc tubes are clamped together; an auxiliary docking plate is connected to one end of the semi-arc tube, and a docking groove matching the clamping plate is provided on the inner side of the auxiliary docking plate, and an auxiliary beam is fixedly connected to the middle of the surface of the semi-arc tube; a strengthening harness is passed between the auxiliary beam and the auxiliary docking plate; and a through hole matching the strengthening harness is provided on the auxiliary docking plate;

[0011] The reinforcement harness includes a tension detection tube matched with the through hole, the detection ends on both sides of the tension detection tube are connected with reinforcement wires, and the top of the reinforcement wire is rotatably connected with a fixed column; both ends of the auxiliary beam are provided with docking grooves matched with the fixed column.

[0012] In the above-mentioned modular splicing MPP cable protection tube structure, modular splicing is convenient and can easily meet the external protection requirements of the straight-end cables.

[0013] As a further improvement of the present application, an internal thread is provided at the opening of the docking groove, a terminal socket is installed in the docking groove, a terminal plug matching the terminal socket is installed on the fixed column, a data cable running through the reinforcement line is connected between the fixed column and the tension detection tube, a data acquisition unit is installed on the auxiliary beam, and the data acquisition unit is signal-connected to multiple terminal sockets.

[0014] As a further improvement of the present application, elastic buffer layers are laid on both the inner and outer sides of the semi-arc sleeves. When the inner sleeve and the outer sleeve are clamped together, the butt joint surfaces of a pair of semi-arc sleeves are perpendicular to the butt joint surfaces of a pair of semi-arc tubes.

[0015] As a further improvement of the present application, slots are provided at both ends of the auxiliary beam, and tension bolts are connected between the slots of two upper and lower symmetrical auxiliary beams.

[0016] As another improvement of the present application, a pair of extension plates are provided at both ends of the tension detection tube, a tension detection column matching the tension sensor is connected between the pair of extension plates, a locking ring sleeved on the tension detection column is connected to the reinforcement line, buffer plates fitted with the extension plates are connected to the upper and lower ends of the locking ring, and a pressure sensor matching the buffer plate is installed on the inner side of the extension plate.

[0017] As another improvement of the present application, after the inner sleeve and the outer sleeve are clamped together, the docking arc plate is exposed on the outside of one end of the outer sleeve, and the minimum distance between the other end face of the outer sleeve and the end face of the half arc sleeve matches the length of the exposed section of the docking arc plate.

[0018] As another improved supplement of the present application, an auxiliary detection system is also included, the auxiliary detection system includes a detection terminal connected to the plurality of data acquisition units by signal, and a processor is disposed in the detection terminal;

[0019] The processor is connected with a data processing module, a data acquisition module and an alarm module;

[0020] The data acquisition module is used to receive the detection data of each reinforced wire harness detection collected by the data acquisition unit; the detection data includes: the tension data of the two ends of the tension detection tube detected by the tension sensor and the pressure data monitored by the pressure sensor;

[0021] The data processing module processes and analyzes the detection data transmitted by the data acquisition module; during data processing, the detection data of each reinforced wire harness is compared and analyzed to determine the structural state of the modular protection tube; if the range of the tension detection data of multiple reinforced wire harnesses is greater than the set value, it is determined that the state of the modular protection tube is abnormal, and at this time, a specific judgment is made on the detection data to determine the abnormality of the modular protection tube;

[0022] The alarm module automatically triggers an alarm when it detects that the state of the modular protection tube is abnormal based on the analysis results of the data processing module.

[0023] As another improvement of the present application, when the data processing module makes a specific judgment, it is determined whether the tension on the tension detection tube increases according to whether the tension data is greater than the set value. If the tension data is greater than the set value, it indicates that the reinforcement line is tilted or subjected to external tension. At this time, it is determined that the modular protection tube structure is loose or the docking is loose;

[0024] Whether the locking ring pressurizes the extension plate is determined based on whether the pressure data is greater than the set value. If the pressure data is greater than the set value, it indicates that the reinforcement line is tilted. At this time, it is determined that the modular protection tube structure is loose or the docking is misaligned.

[0025] To summarize, this solution combines the inner sheath and the outer sheath to provide double protection for the cable, and realizes docking reinforcement and structural abnormality detection through the reinforced wiring harness to ensure stable protection; the auxiliary detection system analyzes the detection data transmitted by the reinforced wiring harness, analyzes the status of the protective sheath and alarms for abnormalities, ensuring that the cable is stably protected by the protective sheath, facilitating timely maintenance of the protective sheath when it is abnormal, and making it easy to ensure the safety of cable protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a stereogram of the first and second embodiments of the present application;

[0027] Figure 2 Exploded diagrams of the first and second embodiments of the present application;

[0028] Figure 3 It is a side cross-sectional view of the first and second embodiments of the present application;

[0029] Figure 4 for Figure 3 The structural diagram at A in the middle;

[0030] Figure 5 for Figure 3 Schematic diagram of the structure at B in the middle;

[0031] Figure 6 It is a cross-sectional view of the first and second embodiments of the present application;

[0032] Figure 7 This is a system block diagram of the second implementation mode of this application.

[0033] Description of the numbers in the figure:

[0034] 1 cable body, 2 inner sheath, 21 semi-arc sleeve, 22 docking arc plate, 23 card plate, 3 outer sheath, 31 semi-arc tube, 32 auxiliary docking plate, 33 auxiliary beam, 4 reinforced wire harness, 41 tension detection tube, 411 extension plate, 412 tension detection column, 42 reinforced wire, 421 locking ring, 422 buffer sheet, 43 fixed column, 5 terminal block. DETAILED DESCRIPTION

[0035] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0036] The first implementation method:

[0037] Figure 1-Figure 6 It shows a modular spliced ​​MPP cable protection tube structure, comprising a cable body 1, on which a plurality of modular protection tubes are sleeved, the modular protection tubes comprising an inner sheath 2 sleeved on the cable body 1, and an outer sheath 3 sleeved on the outer end of the inner sheath 2;

[0038] The inner sheath 2 comprises a pair of semi-arc sleeves 21 that are clamped to each other, a pair of clamping plates 23 are fixedly connected to the surface of the semi-arc sleeves 21, and a docking arc plate 22 is fixedly connected to one end of the semi-arc sleeves 21;

[0039] The outer sheath 3 includes a pair of semi-arc tubes 31 that are clamped together. After the pair of semi-arc tubes 31 are clamped together, the inner sheath 2 is tightly held; one end of the semi-arc tube 31 is connected to an auxiliary docking plate 32, and a docking groove matching the clamping plate 23 is provided on the inner side of the auxiliary docking plate 32. An auxiliary beam 33 is fixedly connected to the middle of the surface of the semi-arc tube 31; both ends of the auxiliary beam 33 are provided with slots, and tension bolts are connected between the slots of the two auxiliary beams 33 that are symmetrical in the upper and lower directions, and the pair of spliced ​​semi-arc tubes 31 are locked and fixed by the tension bolts;

[0040] A reinforcing harness 4 is passed between the auxiliary beam 33 and the auxiliary docking plate 32; a through hole matching the reinforcing harness 4 is opened on the auxiliary docking plate 32;

[0041] After the inner sheath 2 and the outer sheath 3 are clamped, the butt arc plate 22 is exposed outside one end of the outer sheath 3, and the minimum distance between the other end face of the outer sheath 3 and the end face of the semi-arc sleeve 21 matches the length of the exposed section of the butt arc plate 22;

[0042] The reinforcing wire harness 4 includes a tension detection tube 41 that matches the through hole. Both detection ends of the tension detection tube 41 are connected to reinforcing wires 42. The top of the reinforcing wire 42 is rotatably connected to a fixing column 43. Both ends of the auxiliary beam 33 are provided with docking grooves that match the fixing column 43.

[0043] An internal thread is provided at the opening of the docking groove, an external thread matching the internal thread is provided on the surface of the fixing column 43, a terminal block 5 is installed in the docking groove, a terminal plug matching the terminal block 5 is installed on the fixing column 43, a data line running through the reinforcement line 42 is connected between the fixing column 43 and the tension detection tube 41, a data acquisition unit is installed on the auxiliary beam 33, and the data acquisition unit is signal-connected to multiple terminal blocks 5.

[0044] Elastic buffer layers are laid on both the inner and outer sides of the semi-arc sleeves 21 . When the inner sheath 2 and the outer sheath 3 are clamped together, the butt joint surfaces of a pair of semi-arc sleeves 21 are perpendicular to the butt joint surfaces of a pair of semi-arc tubes 31 .

[0045] A pair of extension plates 411 are provided at both ends of the tension detection tube 41, and a tension detection column 412 matching the tension sensor is connected between the pair of extension plates 411. A locking ring 421 sleeved on the tension detection column 412 is connected to the reinforcement line 42, and buffer sheets 422 fitted with the extension plates 411 are connected to the upper and lower ends of the locking ring 421. A pressure sensor matching the buffer sheet 422 is installed on the inner side of the extension plate 411, and the pressure sensor is used to detect the longitudinal force of the locking ring 421 on the extension plate 411 and the tension detection column 412.

[0046] This solution provides preliminary protection for the cable body 1 through the inner sheath 2 and provides external protection through the outer sheath 3; when the inner sheath 2 is installed, after a pair of semi-arc sleeves 21 are butt-jointed to cover the cable body 1, a pair of semi-arc tubes 31 are clamped with two pairs of clamping plates 23. After clamping, the butt joint surfaces of the pair of semi-arc tubes 31 are perpendicular to the butt joint surfaces of the pair of semi-arc sleeves 21; and the pair of semi-arc tubes 31 hold the inner sheath 2 tightly.

[0047] When two adjacent outer sheaths 3 are butt-jointed, the butt-jointing is achieved by inserting the butt-jointing arc plate 22 of the inner sheath 2 into the other outer sheath 3; after butt-jointing, the reinforcing harness 4 is installed;

[0048] When the reinforcing harness 4 is installed, it passes through the auxiliary docking plate 32 until the tension detection tube 41 is fixed at the docking plate 32, and then the fixing columns 43 on both sides of the tension detection tube 41 are threadedly connected to the auxiliary beam 33. At this time, the wiring plugs on the fixing columns 43 are connected to the wiring seat 5. At this time, the two adjacent auxiliary beams 33 are pulled and fixed by the reinforcing harness 4, so as to assist the stable docking of the two adjacent outer sheaths 3; after installation, the reinforcing harness 4 is in a straight state, which is easy to buffer the external impact to a certain extent, and plays an external protection role for the outer sheath 3;

[0049] When the outer sheath 3 is loose or misaligned, the tension magnitude and direction of the reinforcing wires 42 of the reinforcing wire harnesses 4 at multiple positions on the tension detection tube 41 are different. When the two outer sheaths 3 are normally docked and the outer sheath 3 and the inner sheath 2 are normally spliced, the tension magnitude and direction of the reinforcing wires 42 of the reinforcing wire harnesses 4 at multiple positions on the tension detection tube 41 are consistent. By analyzing the tension detection data of each reinforcing wire harness 4, it can be determined whether the modular protective cover is normally protecting the cable.

[0050] Since the tension detection data in the tension detection tube 41 can be transmitted to the data acquisition unit in the auxiliary beam 33 through the data line in the reinforcement line 42;

[0051] Optionally, the data acquisition unit can upload the collected detection data in real time or periodically. By analyzing the detection data, the modular protective cover can be inspected in real time or periodically to determine whether it is still protecting the cable normally, so as to facilitate timely maintenance of the modular protective cover when it fails.

[0052] The modular protective tube structure of this embodiment provides double protection for the cable body 1 through the close fit of the inner sheath 2 and the outer sheath 3, and performs docking reinforcement and structural abnormality detection through the reinforcement harness 4.

[0053] Second implementation method:

[0054] Figure 7As shown, it also includes an auxiliary detection system, the auxiliary detection system includes a detection terminal connected to the plurality of data acquisition units by signal, and a processor is disposed in the detection terminal;

[0055] The processor is connected with a data processing module, a data acquisition module and an alarm module;

[0056] The data acquisition module is used to receive the detection data of each reinforced wiring harness 4 collected by the data acquisition unit;

[0057] The data acquisition module is connected to the data acquisition unit by signal. The data acquisition module receives the tension detection data from each data acquisition unit. The data acquisition unit transmits the detection data of the tension detection tube 41 to the data acquisition module in real time or regularly. The detection data includes: the tension data at both ends of the tension detection tube 41 detected by the tension sensor and the pressure data monitored by the pressure sensor;

[0058] The data processing module processes and analyzes the detection data transmitted by the data acquisition module; during data processing, the detection data of each reinforced wiring harness 4 is compared and analyzed to determine the structural state of the modular protection tube;

[0059] If the range of the tension test data of the multiple reinforced harnesses 4 is greater than the set value, it is determined that the state of the modular protection tube is abnormal. At this time, a specific judgment is made on the test data to determine the abnormality of the modular protection tube;

[0060] In the specific judgment, whether the tension data is greater than the set value is used to judge whether the tension on the tension detection tube 41 increases. If the tension data is greater than the set value, it indicates that the reinforcement line 42 is tilted or subjected to external tension. At this time, it is judged that the modular protection tube structure is loose or the docking is loose.

[0061] According to whether the pressure data is greater than the set value, it is determined whether the lock ring 421 pressurizes the extension plate 411. If the pressure data is greater than the set value, it indicates that the reinforcement line 42 is tilted. At this time, it is determined that the modular protection tube structure is loose or misaligned;

[0062] The data processing module collaborates with the data acquisition module and the alarm module to ensure the timeliness and accuracy of data processing, and triggers corresponding alarms based on the processing results.

[0063] The alarm module automatically triggers an alarm based on the analysis results of the data processing module when it detects that the modular protection tube is in an abnormal state. The alarm can be in various forms such as sound, light, text message, email, etc.

[0064] The system workflow includes:

[0065] A1, data collection: the data collection unit collects the tension test data of each reinforcement harness 4 in real time or regularly, and transmits it to the data collection module through the data line;

[0066] A2, data processing: the data acquisition module transmits the received data to the data processing module for data processing and analysis and judgment, and generates the status assessment results of each modular protection tube;

[0067] A3, alarm triggering: The data processing module determines whether an alarm needs to be triggered based on the evaluation results; if an alarm is required, an alarm signal is issued through the alarm module according to the preset alarm process.

[0068] In this embodiment, through the coordinated work of the above modules, the auxiliary detection system can achieve comprehensive monitoring and evaluation of the modular spliced ​​MPP cable protection pipe structure, ensuring that it continuously and effectively provides protection for the cable body 1.

[0069] To summarize, this solution combines the inner sheath 2 and the outer sheath 3 to provide double protection for the cable, and realizes docking reinforcement and structural abnormality detection through the reinforced harness 4 to ensure stable protection; the auxiliary detection system analyzes the detection data transmitted by the reinforced harness 4, analyzes the status of the protective sheath and alarms for abnormalities, ensuring that the cable is stably protected by the protective sheath, facilitating timely maintenance of the protective sheath when it is abnormal, and making it easy to ensure the safety of cable protection.

[0070] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A modular spliced ​​MPP cable protection tube structure, comprising a cable body (1), Features: The cable body (1) is sleeved with a plurality of modular protective tubes, the modular protective tubes comprising an inner sheath (2) sleeved on the cable body (1), the outer end of the inner sheath (2) being sleeved with an outer sheath (3); The inner protective sleeve (2) comprises a pair of semi-arc sleeves (21) that are clamped to each other, a pair of clamping plates (23) are fixedly connected to the surface of the semi-arc sleeve (21), and one end of the semi-arc sleeve (21) is fixedly connected to a docking arc plate (22); The outer sheath (3) comprises a pair of mutually clamped semi-arc tubes (31), and the pair of semi-arc tubes (31) are clamped to hold the inner sheath (2); one end of the semi-arc tube (31) is connected to an auxiliary docking plate (32), the inner side of the auxiliary docking plate (32) is provided with a docking groove matching the clamping plate (23), and the middle part of the surface of the semi-arc tube (31) is fixedly connected to an auxiliary beam (33); a reinforcement harness (4) is passed between the auxiliary beam (33) and the auxiliary docking plate (32); and a through hole matching the reinforcement harness (4) is provided on the auxiliary docking plate (32); The reinforcing wire harness (4) comprises a tension detection tube (41) matching the through hole, the detection ends on both sides of the tension detection tube (41) are connected to a reinforcing wire (42), and the top end of the reinforcing wire (42) is rotatably connected to a fixing column (43); both ends of the auxiliary beam (33) are provided with a docking groove matching the fixing column (43); An internal thread is provided at the opening of the docking groove, a wiring seat (5) is installed in the docking groove, a wiring plug matching the wiring seat (5) is installed on the fixing column (43), a data line passing through the reinforcement line (42) is connected between the fixing column (43) and the tension detection tube (41), and a data acquisition unit is installed on the auxiliary beam (33), and the data acquisition unit is signal-connected to the plurality of wiring seats (5); A pair of extension plates (411) are provided at both ends of the tension detection tube (41), a tension detection column (412) matching the tension sensor is connected between the pair of extension plates (411), a locking ring (421) sleeved on the tension detection column (412) is connected to the reinforcement line (42), a buffer sheet (422) fitted with the extension plate (411) is connected to the upper and lower ends of the locking ring (421), and a pressure sensor matching the buffer sheet (422) is installed on the inner side of the extension plate (411).

2. A modular spliced ​​MPP cable protection pipe structure according to claim 1, Features: Elastic buffer layers are laid on both the inner and outer sides of the semi-arc sleeve (21); when the inner sleeve (2) and the outer sleeve (3) are clamped together, the butt joint surfaces of the pair of semi-arc sleeves (21) are perpendicular to the butt joint surfaces of the pair of semi-arc tubes (31).

3. A modular spliced ​​MPP cable protection pipe structure according to claim 1, Features: Slot holes are provided at both ends of the auxiliary beam (33), and tension bolts are connected between the slot holes of two upper and lower symmetrical auxiliary beams (33).

4. A modular spliced ​​MPP cable protection pipe structure according to claim 1, Features: After the inner sheath (2) and the outer sheath (3) are clamped together, the butt-jointed arc plate (22) is exposed outside one end of the outer sheath (3), and the minimum distance between the end surface of the other end of the outer sheath (3) and the end surface of the half arc sheath (21) matches the length of the exposed section of the butt-jointed arc plate (22).

5. A modular spliced ​​MPP cable protection pipe structure according to claim 1, Features: It also includes an auxiliary detection system, the auxiliary detection system includes a detection terminal connected to the plurality of data acquisition units by signal, and the detection terminal is provided with a processor; The processor is connected to a data processing module, a data acquisition module and an alarm module; The data acquisition module is used to receive detection data of each reinforced wire harness (4) collected by the data acquisition unit; the detection data includes: tension data at both ends of the tension detection tube (41) detected by the tension sensor and pressure data monitored by the pressure sensor; The data processing module processes and analyzes the detection data transmitted by the data acquisition module; during data processing, the detection data of each strengthening harness (4) is compared and analyzed to determine the structural state of the modular protection tube; if the range of the tension detection data of the plurality of strengthening harnesses (4) is greater than a set value, it is determined that the state of the modular protection tube is abnormal, and at this time, a specific judgment is made on the detection data to determine the abnormality of the modular protection tube; The alarm module automatically triggers an alarm when it detects that the state of the modular protection tube is abnormal according to the analysis result of the data processing module.

6. A modular spliced ​​MPP cable protection pipe structure according to claim 5, Features: When the data processing module makes a specific judgment, it is determined whether the tension on the tension detection tube (41) increases according to whether the tension data is greater than a set value. If the tension data is greater than the set value, it indicates that the reinforcement line (42) is tilted or is affected by an external tension. At this time, it is determined that the modular protection tube structure is loose or the connection is loose. According to whether the pressure data is greater than a set value, it is determined whether the locking ring (421) increases the pressure on the extension plate (411); if the pressure data is greater than the set value, it indicates that the reinforcement line (42) is tilted, and at this time it is determined that the modular protection tube structure is loose or misaligned.

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