Anti-twist MPP power pipe

Abstract

This utility model relates to the field of power pipe technology and discloses an MPP power pipe designed to prevent breakage by twisting. It includes a core tube, an inner sleeve, and an outer sleeve arranged sequentially from the inside out. A set of steel wires arranged in a circumferential array are installed inside the core tube. An overload warning layer is provided on the outside of the core tube. When the pressure or torque is overloaded, the overload warning layer produces a pungent odor and returns to odorless under normal conditions. A positive anti-torsion spring is installed between the core tube and the outer sleeve, and a reverse anti-torsion spring is installed between the inner sleeve and the outer sleeve. A damping ring is fitted on the outer sleeve, and the damping ring has an air chamber. A set of rolling sleeves arranged in a linear array are fitted on the damping ring, with an annular gap fixed between each pair of rolling sleeves. This utility model incorporates an overload warning layer and a force-sensitive color-changing sensor layer, enabling monitoring and warning of the power pipe's overload status from both olfactory and visual perspectives. The overload warning layer produces a pungent odor when the pressure or torque is overloaded.

Description

Technical Field

[0001] This utility model relates to the field of power pipe technology, and more specifically, to an MPP power pipe that is resistant to twisting and breaking. Background Technology

[0002] In the field of power pipe technology, with the continuous expansion of power engineering construction and the increasing demands for power transmission stability, the performance and quality of power pipes have become crucial factors. Traditional power pipes have gradually revealed numerous problems in practical applications, as follows:

[0003] Existing power pipes lack an effective overload monitoring mechanism, making it impossible to detect in a timely manner whether the pressure or torque on the pipe body is overloaded. The anti-torsion structure of existing power pipes is often relatively simple, usually relying only on the material strength of the pipe body itself to resist torque. Furthermore, when facing overload conditions, existing power pipes cannot provide warning information to operators from multiple dimensions, making it difficult for operators to intuitively and timely judge the overload status of the pipe body. At the same time, after traditional power pipes are deformed by external forces, they are difficult to restore to their original state.

[0004] Based on this, the present invention provides an MPP power pipe that is resistant to twisting and breaking, in order to solve the technical problems mentioned in the background art. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides an MPP power pipe that is resistant to twisting and breakage. This utility model is equipped with an overload warning layer and a force-induced color-changing sensor layer, which can monitor and warn of the overload status of the power pipe from both olfactory and visual dimensions. The overload warning layer will produce an irritating odor when the pressure or torque is overloaded, and will return to odorless when the pressure or torque returns to normal, so as to realize timely warning of overload conditions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an MPP power conduit designed to prevent breakage by twisting, comprising a core tube, an inner sleeve, and an outer sleeve arranged sequentially from the inside out. A set of steel wires arranged in a circumferential array are installed inside the core tube. An overload warning layer is provided on the outer side of the core tube. When the pressure or torque is overloaded, the overload warning layer produces a pungent odor and returns to odorless under normal conditions. A positive anti-torsion spring is installed between the core tube and the outer sleeve, and a reverse anti-torsion spring is installed between the inner sleeve and the outer sleeve. A damping ring is fitted onto the outer sleeve, and an air cavity is provided inside the damping ring. A set of rolling sleeves arranged in a linear array is fitted onto the damping ring. An annular gap is fixed between each pair of rolling sleeves. A force-sensitive color-changing sensing layer is provided on the rolling sleeve, and the force-sensitive color-changing sensing layer automatically changes color when the pressure or torque is overloaded.

[0007] As a preferred embodiment of this invention, the overload warning layer includes a flexible substrate layer, which is an elastic polymer. A porous functional layer is laminated on the flexible substrate layer. The porous functional layer is a porous material with a pore structure. The porosity of the porous functional layer is 60% to 80%. The porous material is a metal-organic framework. The pore structure of the porous material is loaded with irritating odor molecules. When the overload warning layer is subjected to pressure exceeding a predetermined threshold, the pore structure deforms or connects, releasing the irritating odor molecules. When the pressure returns to below the threshold, the pore structure closes, re-adsorbs residual odor molecules, and returns to an odorless state.

[0008] As a preferred embodiment of this utility model, the mechanochromic sensing layer is made of mechanochromic polyurethane material, and the core tube, inner sleeve, damping ring bladder and outer sleeve are all made of modified polypropylene shape memory rubber material.

[0009] As a preferred embodiment of this utility model, the positive anti-torsion spring and the negative anti-torsion spring have opposite helical directions, and both the positive anti-torsion spring and the negative anti-torsion spring are nickel-titanium shape memory alloys.

[0010] As a preferred embodiment of this utility model, the air cavity is filled with inert gas, the volume of the air cavity accounts for 30% to 50% of the total volume of the damping ring bladder, the thickness of the damping ring bladder is 1.2 mm to 2 mm, and the thickness of the rolling sleeve is 0.7 mm to 1.2 mm.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model is equipped with an overload warning layer and a force-induced color-changing sensor layer, which can monitor and warn of the overload status of the power pipe from both olfactory and visual dimensions. The overload warning layer will produce an irritating odor when the pressure or torque is overloaded, and will return to odorless when the pressure or torque returns to normal, so as to realize timely warning of overload. The force-induced color-changing sensor layer will automatically change color when the pressure or torque is overloaded. In conjunction with the overload warning layer, it allows operators to more intuitively and timely detect the overload status of the pipe.

[0013] 2. This utility model installs a positive anti-torsion spring between the core tube and the outer tube, and a reverse anti-torsion spring between the inner tube and the outer tube, with the two sets of springs having opposite helical directions. They are made of nickel-titanium shape memory alloy. When the power tube is subjected to torque, the two sets of springs generate reverse deformations through the superelastic properties of the shape memory metal, offsetting external stress and preventing local breakage caused by stress concentration between the core tube and the outer tube. The combination of the bidirectional anti-torsion mechanism and smart materials in this utility model significantly improves the structural stability of the power tube under complex working conditions.

[0014] 3. In this invention, the damping ring bladder fitted onto the outer sleeve has an air cavity filled with inert gas. The volume of the air cavity accounts for a certain proportion of the total volume of the damping ring bladder. The damping ring bladder and the rolling sleeve have specific thicknesses. The rolling sleeves are linearly arrayed on the damping ring bladder, with annular gaps between each pair. When torque is transmitted to the rolling sleeve, the inert gas is compressed and absorbs the impact energy. The modified polypropylene shape memory rubber material of the rolling sleeve further buffers the impact through reversible deformation of the molecular chains, forming a "gas-solid" composite buffer layer. This converts concentrated stress into multi-node frictional energy dissipation, avoiding tube breakage caused by localized stress concentration. At the same time, the rolling sleeve can undergo controllable elastic deflection under extreme torque, triggering the color reaction of the force-induced color-changing sensor layer. Furthermore, the MPP material automatically resets after unloading, preventing the accumulation of plastic deformation.

[0015] 4. The core tube, inner sleeve, damping ring, and outer sleeve of this utility model are all made of modified polypropylene shape memory rubber material, which enables the tube to return to its original shape after a certain degree of deformation. This self-recovery function works in conjunction with the above-mentioned overload monitoring, anti-torsion, and buffering functions to ensure that the tube can maintain good performance after experiencing various complex working conditions, effectively extending the service life of the MPP power pipe. This is an advantage that existing traditional power pipes do not have. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an anti-twisting MPP power pipe according to the present invention;

[0017] Figure 2 This utility model Figure 1 A magnified schematic diagram of the local structure at point A;

[0018] Figure 3 This is a schematic diagram of the structure of the force-induced color-changing sensing layer and the rolling sleeve of this utility model;

[0019] Figure 4 This is a schematic diagram of the overload warning layer of this utility model.

[0020] In the diagram: 1. Core tube; 2. Inner sleeve; 3. Outer sleeve; 4. Steel wire strip; 5. Overload warning layer; 6. Positive anti-torsion spring; 7. Reverse anti-torsion spring; 8. Damping ring bladder; 9. Force-induced color-changing sensor layer; 10. Rolling sleeve; 51. Flexible substrate layer; 52. Porous functional layer; 81. Air cavity. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, this utility model provides an MPP power pipe that is resistant to twisting and breaking, including a core tube 1, an inner sleeve 2 and an outer sleeve 3 arranged sequentially from the inside to the outside. A set of steel wire strips 4 arranged in a circular array are installed inside the core tube 1.

[0023] The outer side of the core tube 1 is provided with an overload warning layer 5. When the pressure or torque of the overload warning layer 5 is overloaded, it will produce an irritating odor and return to odorless under normal conditions.

[0024] The overload warning layer 5 includes a flexible substrate layer 51, which is an elastic polymer. A porous functional layer 52 is laminated on the flexible substrate layer 51. The porous functional layer 52 is a porous material with a pore structure. The porosity of the porous functional layer 52 is 75%. The porous material is a metal-organic framework. The pore structure of the porous material is loaded with irritating odor molecules. When the pressure of the overload warning layer 5 exceeds a predetermined threshold, the pore structure deforms or connects, releasing irritating odor molecules. When the pressure returns to below the threshold, the pore structure closes, re-adsorbs residual odor molecules, and returns to an odorless state.

[0025] In practical use, when the MPP power pipe is subjected to external torque, the steel wires 4 arranged in a circular array inside the core tube 1 can enhance the overall strength of the pipe body, initially resist the torque, and prevent the pipe body from easily deforming.

[0026] When the torque or pressure exceeds the predetermined threshold, the pore structure of the overload warning layer 5 on the outside of the core tube 1 deforms or connects, releasing an irritating odor to warn the operator that the power pipe is overloaded.

[0027] The pungent odor is from ammonia or thiols;

[0028] When the pressure or torque returns to normal, the pore structure closes, and the residual odor molecules are reabsorbed, restoring the odorless state. This enables timely warning of overload conditions and prevents the pipe from breaking due to overload. Compared with existing technologies, this greatly improves the ability to monitor the overload status of the pipe.

[0029] This design solves the problem of sudden breakage of traditional power pipes due to concealed overload. Its self-recovery characteristics and intelligent response mechanism significantly improve the safety and reliability of power pipes and avoid the limitations of early warning by a single mechanical structure.

[0030] A positive anti-torsion spring 6 is installed between the core tube 1 and the outer tube 3, and a reverse anti-torsion spring 7 is installed between the inner tube 2 and the outer tube 3.

[0031] The positive anti-torsion spring 6 and the negative anti-torsion spring 7 have opposite helical directions, and both the positive anti-torsion spring 6 and the negative anti-torsion spring 7 are nickel-titanium shape memory alloys.

[0032] When the power tube is subjected to clockwise or counterclockwise torque, the two sets of springs generate opposite deformations through the superelastic properties of the shape memory metal, which counteracts the external stress and prevents local fracture caused by stress concentration between the core tube 1 and the outer tube 3. The high fatigue life and shape memory function of the nickel-titanium alloy ensure that the spring can still return to its original shape after repeated loading, which greatly extends the service life of the power tube. This design solves the pain point of the existing power tube's single anti-torsion structure and easy fatigue failure. Its bidirectional anti-torsion mechanism combined with smart materials significantly improves the structural stability of the power tube under complex working conditions.

[0033] A damping ring bladder 8 is fitted onto the outer sleeve 3, and an air chamber 81 is provided inside the damping ring bladder 8.

[0034] The air chamber 81 is filled with inert gas, and the volume of the air chamber 81 accounts for 45% of the total volume of the damping ring bladder 8. The thickness of the damping ring bladder 8 is 1.5 mm.

[0035] A set of rolling sleeves 10 arranged in a linear array are fitted on the damping ring bladder 8. The thickness of the rolling sleeves 10 is 1mm. An annular gap is fixed between each pair of rolling sleeves 10. A force-induced color-changing sensing layer 9 is provided on the rolling sleeves 10. The force-induced color-changing sensing layer 9 automatically changes color when pressure or torque is overloaded.

[0036] The mesiochromic sensing layer 9 is made of mesiochromic polyurethane material, while the core tube 1, inner sleeve 2, damping ring 8, and outer sleeve 3 are all made of modified polypropylene shape memory rubber material.

[0037] When the pipe is subjected to overload pressure or torque, the force-induced color-changing sensor layer 9 automatically changes color, working in conjunction with the overload warning layer 5 to provide a dual warning to the operator through both visual and olfactory means. This allows the operator to more intuitively and promptly detect the pipe's overload status. Compared to existing technologies, this design significantly improves the accuracy and timeliness of the operator's judgment of the pipe's overload status.

[0038] The core tube 1, inner sleeve 2, damping ring 8 and outer sleeve 3 are all made of modified polypropylene shape memory rubber material, which enables the tube to return to its original shape after a certain degree of deformation, further ensuring the structural stability and performance of the tube, reducing the risk of damage caused by deformation, and extending the service life of the MPP power tube.

[0039] The linear distribution of the rolling sleeve 10 allows external torque to be transmitted axially in stages. The annular gap provides deformation space for the rolling sleeve 10, allowing it to generate small displacements when under stress, converting concentrated stress into multi-node frictional energy dissipation, and avoiding tube fracture caused by local stress concentration. The rolling sleeve 10 works in synergy with the damping ring 8. When torque is transmitted to the rolling sleeve 10, the inert gas is compressed and absorbs the impact energy. At the same time, the modified polypropylene shape memory rubber material of the rolling sleeve 10 further buffers through reversible deformation of molecular chains, forming a "gas-solid" composite buffer layer, reducing the direct impact of instantaneous peak torque on the core tube 1. The reserved space of the annular gap allows the rolling sleeve 10 to undergo controllable elastic deflection under extreme torque, triggering the color reaction of the force-induced color-changing sensing layer 9. Meanwhile, the MPP material automatically resets after unloading through its shape memory characteristics, preventing the accumulation of plastic deformation.

[0040] When external torque is applied to the rolling sleeve 10, the single rolling sleeve 10 under action can rotate passively, thereby relieving the influence of external torque on the damping ring 8, outer sleeve 3 and inner sleeve 2. At the same time, the transmission of torque can be blocked by the setting of the annular gap, thereby reducing the breakage rate of this conduit.

[0041] Working principle and usage process of this utility model:

[0042] When external torque or pressure is applied to the tube body, the steel wires 4 arranged in a circumferential array inside the core tube 1 first enhance the structural rigidity and initially resist the external force. If the force exceeds the preset threshold, the metal-organic framework pore structure inside the overload warning layer 5 on the outside of the core tube 1 deforms or connects, releasing adsorbed irritating odor molecules. At the same time, the force-induced color-changing polyurethane material on the rolling sleeve 10 changes color due to stress, forming a dual warning of smell and sight. At this time, the positive anti-torsion spring 6 between the core tube 1 and the outer sleeve 3 and the reverse anti-torsion spring 7 between the inner sleeve 2 and the outer sleeve 3 generate a reverse torque through hyperelastic deformation, offsetting the external stress and preventing local stress concentration from causing breakage. The damping ring bladder 8 on the outer sleeve 3 is pressurized by the inert gas filled inside. The linearly arrayed rolling sleeves 10 absorb impact energy and undergo controllable elastic deflection within the annular gap, converting concentrated stress into multi-node frictional energy dissipation. Simultaneously, the modified polypropylene shape memory rubber material further buffers the instantaneous peak torque through reversible deformation of the molecular chains. When the overload is released, the pore structure closes and re-adsorbs odor molecules, restoring the odorless state. The anti-torsion spring resets due to its shape memory characteristics, and the rolling sleeves 10 and damping ring 8 recover under the self-recovery characteristics of the MPP material, ensuring the integrity of the tube structure and the continuity of its function. This process achieves the organic synergy of dynamic stress buffering, bidirectional anti-torsion cancellation, overload dual warning, and self-recovery functions, significantly improving the anti-twist breakage capability and safety monitoring efficiency of the power pipe under complex working conditions.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of MPP power pipe that is resistant to twisting and breakage, characterized in that: The device includes a core tube (1), an inner sleeve (2), and an outer sleeve (3) arranged sequentially from the inside to the outside. A set of steel wires (4) arranged in a circular array are installed inside the core tube (1). An overload warning layer (5) is provided on the outside of the core tube (1). The overload warning layer (5) produces a pungent odor when pressure or torque is overloaded, and returns to odorless under normal conditions. A positive anti-torsion spring (6) is installed between the core tube (1) and the outer sleeve (3). The inner sleeve (2) and the outer sleeve (3) are connected by... A reverse anti-torsion spring (7) is installed between the layers. A damping ring bladder (8) is fitted on the outer sleeve (3). An air chamber (81) is provided inside the damping ring bladder (8). A set of rolling sleeves (10) arranged in a linear array is fitted on the damping ring bladder (8). An annular gap is fixed between each pair of rolling sleeves (10). A force-induced color-changing sensing layer (9) is provided on the rolling sleeve (10). The force-induced color-changing sensing layer (9) automatically changes color when pressure or torque is overloaded.

2. The anti-twist-breakage MPP power pipe according to claim 1, characterized in that: The overload warning layer (5) includes a flexible substrate layer (51), which is an elastic polymer. A porous functional layer (52) is laminated on the flexible substrate layer (51). The porous functional layer (52) is a porous material with a pore structure. The porosity of the porous functional layer (52) is 60% to 80%. The porous material is a metal-organic framework. The pore structure of the porous material is loaded with irritating odor molecules. When the overload warning layer (5) is subjected to pressure exceeding a predetermined threshold, the pore structure deforms or connects, releasing the irritating odor molecules. When the pressure returns to below the threshold, the pore structure closes, re-adsorbs residual odor molecules, and returns to an odorless state.

3. The MPP power conduit with anti-twisting feature according to claim 1, characterized in that: The mechanochromic sensing layer (9) is made of mechanochromic polyurethane material, and the core tube (1), inner sleeve (2), damping ring bladder (8) and outer sleeve (3) are all made of modified polypropylene shape memory rubber material.

4. The anti-twist-breakage MPP power pipe according to claim 1, characterized in that: The positive anti-torsion spring (6) and the negative anti-torsion spring (7) have opposite helical directions, and both the positive anti-torsion spring (6) and the negative anti-torsion spring (7) are nickel-titanium shape memory alloys.

5. The anti-twisting MPP power pipe according to claim 1, characterized in that: The air chamber (81) is filled with inert gas, and the volume of the air chamber (81) accounts for 30% to 50% of the total volume of the damping ring bladder (8). The thickness of the damping ring bladder (8) is 1.2 mm to 2 mm, and the thickness of the rolling sleeve (10) is 0.7 mm to 1.2 mm.

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