A super tough fireproof, ratproof, birdproof, leakage-proof, break-proof, pressure-proof, settlement-proof, heat-insulating and cold-insulating silicon core pipe

Abstract

The present application relates to the field of pipe material, and discloses a super tough fireproof, ratproof, birdproof, leakage-proof, anti-digging, anti-rolling, anti-settlement, heat-insulating and cryogenic silicon core pipe solid-wall pipe material, which is suitable for railway, communication, power and water conservancy fields.The pipe material is a multi-layer structure, and the inner wall surface is smooth, and the pipe material is super tough: the first layer from inside to outside is a super tough smooth layer; the second layer from inside to outside is a heat insulation layer; the third layer from inside to outside is a fireproof, heat-insulating and cryogenic layer; and the fourth layer from inside to outside is a leakage-proof super tough protective layer.Every year, pipe materials such as silicon core pipes and solid-wall pipes suffer from fire, causing about ten billion losses; are gnawed by rats, are dug off by excavators and hoes, are broken by banyan tree roots, are misaligned due to geological settlement, causing internal optical cable and cable damage, and pipe space cannot be normally utilized, increasing maintenance costs of hundreds of millions of yuan.In order to prevent disasters and save people, and protect the safety of people's property, the product is developed, and can be used in high-cold, geological settlement areas, areas with serious rat gnawing and areas with frequent fires.

Description

Technical Field

[0001] This invention relates to the field of pipe materials, specifically to a super-tough, fire-resistant, rodent-proof, bird-proof, leak-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core pipe with solid wall. Background Technology

[0002] Silicon core tube is a new type of composite pipe with a silicone solid lubricant on the inner wall. The main raw materials are high-density polyethylene (HDPE) or ordinary polyethylene (PE), and the core layer is silicone solid lubricant with a low coefficient of friction. The static coefficient of friction of the inner wall is ≤0.25 (flat plate method, for HDPE standard test bar), and the dynamic coefficient is ≤0.15.

[0003] Solid-wall pipe is a type of pipe made of polyethylene (PE) or hard vinyl chloride (HPVC). It has a uniform solid wall structure with no internal cavities.

[0004] Plum blossom tubes or grid tubes have high space utilization and are suitable for laying multiple cables together on urban trunk lines.

[0005] The aforementioned pipe materials are widely used in underground pipelines for communications, power, and water conservancy. Taking silicon core pipes as an example, the following problems exist: In the real world, when using the cable blowing process to lay optical cables, the high coefficient of friction inside the silicon core tube often leads to cable blowing failure.

[0006] Because the raw materials for silicon core tubes, solid-wall tubes, plum blossom tubes, and grid tubes are high-density polyethylene (HDPE), ordinary polyethylene (PE), or rigid vinyl chloride (HPVC), they are neither fireproof, nor resistant to rodent bites or bird pecks, nor are they resistant to digging, crushing, settling, or thermal insulation. They are easily broken during digging, leading to internal cable insulation damage, leakage, and endangering the lives of construction workers and passersby. Therefore, silicon core tubes or solid-wall tubes will ignite when exposed to flames, igniting the internal protective optical and electrical cables and causing communication interruptions. Frequent digging by excavators and hoes causes internal cable insulation damage and leakage. Rodent bites and bird pecks can also cause the optical and electrical cables inside the silicon core tubes to break, leading to major communication failures and power accidents. Furthermore, if heavy vehicles frequently travel on the road, the silicon core tubes and solid-wall tubes beneath the road will deform and become misaligned, making it difficult to insert new optical cables.

[0007] In high-altitude and cold regions, as temperatures drop, optical fibers experience axial compressive forces due to the difference in expansion coefficients between the fiber coating and the quartz crystal, causing micro-bending and increased optical loss. This can lead to serious problems such as hardening, cracking, and brittleness in the cable. If the silicon core tube has thermal insulation properties, the optical cable inside will be protected.

[0008] Every year, fires caused by the internal optical and electrical cables of silicon core tubes, due to their lack of fire resistance, rodent protection, and digging resistance, result in losses amounting to billions of yuan, with some fires even endangering lives. Rodent damage to the silicon core tubes and their internal optical and electrical cables also increases maintenance costs by hundreds of millions of yuan. Super-tough, fire-resistant, rodent-proof, bird-proof, leak-proof, digging-resistant, crush-resistant, settlement-resistant, and thermally insulating solid-wall silicon core tubes can solve these problems, saving lives and protecting people's lives and property. Summary of the Invention

[0009] (a) Technical problems to be solved The purpose of this invention is to provide a super-tough, fireproof, rodent-proof, bird-proof, leak-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a super-tough, fire-resistant, rodent-proof, bird-proof, leak-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe. Its characteristic is that the pipe has a multi-layer structure.

[0011] Preferably, the first layer of the tube from the inside out is a super-tough and smooth layer, wherein the material is ultra-high molecular weight polyethylene. The inner wall of existing silicon core tubes is composed of a silicone solid lubricating layer, with a static friction coefficient ≤0.25 and a dynamic friction coefficient ≤0.15; while ultra-high molecular weight polyethylene has self-lubricating properties: a static friction coefficient of approximately 0.07–0.15 and a dynamic friction coefficient of approximately 0.05–0.10; significantly reducing the resistance of optical cable laying, its performance is far superior to that of existing silicon core tubes.

[0012] Preferably, the second layer of the pipe from the inside out is a heat insulation layer, wherein the synthetic material is selected from the group consisting of: intumescent fire retardant coatings, intumescent fire retardant paints, graphite, silica sol, alumina, aluminum foil or aramid, and any combination thereof.

[0013] Preferably, the third layer of the pipe from the inside out is a fireproof, heat-insulating, and cold-insulating layer, wherein the synthetic material is selected from the group consisting of: high-silica fiberglass cloth, fire-retardant coated fiberglass cloth, silicone rubber coated fiberglass cloth, basalt fiber fireproof cloth, acrylic cotton fiber fireproof cloth, Nomex fireproof cloth, ceramic fiber cloth, aluminum silicate fiber cloth, blue fiberglass fireproof cloth, aluminum foil fireproof cloth, and other fireproof cloths, as well as any combination thereof. The thermal conductivity of high-silica cloth at room temperature is only about 0.03 W / m·K to 0.04 W / m·K, indicating that it has excellent heat-insulating and cold-insulating effects.

[0014] Preferably, the fourth layer from the inside out of the pipe is a super-tough protective layer to prevent leakage, using ultra-high strength. Ultra-high molecular weight polyethylene (UHMWPE) is an insulating material, thus preventing electrical leakage. The specific strength of UHMWPE fiber is 15 times that of steel, making it both wear-resistant and tough, thus preventing rodent bites and bird pecks.

[0015] Preferably, the structure of the pipe can be any one or more of these four layers.

[0016] Preferably, the tube is manufactured as a silicon core tube or a solid wall tube according to its size, or it can be made into a plum blossom tube or a grid tube.

[0017] Preferably, ultra-high molecular weight polyethylene (UHMWPE) pipes are prone to bubble / pore formation during extrusion. The main reasons are: UHMWPE melt has extremely high viscosity, very poor fluidity, is difficult to plasticize, difficult to degas, and is easily degraded. Combined with the raw material's moisture absorption and improper processes / equipment, gases (water vapor, air, degradation gases) cannot escape, thus forming bubbles. Based on years of repeated experiments, the following process has been developed to solve this problem: 1) Previously, the industry generally believed that the temperature during melt extrusion should not exceed 200℃, but repeated practice has proven that bubbles will not appear when the temperature is controlled between 210℃ and 230℃; 2) Thoroughly dry the raw material; 3) Isolate oxygen or fill with nitrogen; 4) Properly control the pressure: melt pressure approximately 35 MPa, molding pressure approximately 10-30 MPa.

[0018] Compared with existing technologies, this invention provides a super-tough, fire-resistant, rodent-proof, bird-proof, leak-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe, which has the following beneficial effects: The tubing is extremely strong and tough, fireproof, rodentproof, birdproof, leakproof, digging-proof, and crush-proof, making it suitable for protecting newly built optical cables and electrical cables.

[0019] It provides excellent insulation against cold and heat, making it suitable for use in high-altitude and cold regions.

[0020] Prevent crushing and settlement, and ensure the utilization rate of pipe materials.

[0021] Fireproof, rodent-proof, and bird-proof materials protect the internal optical and electrical cables from fire, rodent damage, and bird pecking. This ensures the safety of optical and electrical cables, as well as the safety of communication networks and power grids.

[0022] In addition, the pipe material is insulated, non-conductive, and leak-proof, so it will not cause accidental injury to pedestrians due to leakage, thus saving lives and benefiting society. Attached Figure Description

[0024] Figure 1 This is a cross-section of the present invention; Figure 2 This is a side view of the present invention; In the diagram: 1. Super tough and smooth layer; 2. Heat insulation layer; 3. Fireproof, heat-insulating, and cold-resistant layer; 4. Super tough protective layer against electrical leakage. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Please see Figure 1-2 The present invention provides a technical solution: a super strong and tough fireproof, rodent-proof, bird-proof, leakage-proof, digging-proof, crush-proof, settlement-proof, heat-insulating and cold-insulating silicon core tube solid wall pipe, wherein the pipe has a multi-layer structure.

[0028] The first layer of the tubing, from the inside out, is a super-tough and smooth layer, wherein the material is ultra-high molecular weight polyethylene. The inner wall of existing silicon core tubes is composed of a silicone solid lubricating layer, with a static friction coefficient ≤0.25 and a dynamic friction coefficient ≤0.15; while ultra-high molecular weight polyethylene has self-lubricating properties: a static friction coefficient of approximately 0.07–0.15 and a dynamic friction coefficient of approximately 0.05–0.10; significantly reducing the resistance during optical cable laying, its performance is far superior to that of existing silicon core tubes.

[0029] The second layer of the pipe from the inside out is a heat insulation layer, wherein the synthetic material is selected from the group consisting of: intumescent fire retardant coatings, intumescent fire retardant paints, graphite, silica sol, alumina, aluminum foil or aramid, and any combination thereof.

[0030] Preferably, the third layer of the pipe from the inside out is a fireproof, heat-insulating, and cold-insulating layer, wherein the synthetic material is selected from the group consisting of: high-silica fiberglass cloth, fire-retardant coated fiberglass cloth, silicone rubber coated fiberglass cloth, basalt fiber fireproof cloth, acrylic cotton fiber fireproof cloth, Nomex fireproof cloth, ceramic fiber cloth, aluminum silicate fiber cloth, blue fiberglass fireproof cloth, aluminum foil fireproof cloth, and other fireproof cloths, as well as any combination thereof. The thermal conductivity of high-silica cloth at room temperature is only about 0.03 W / m·K to 0.04 W / m·K, indicating that it has excellent heat-insulating and cold-insulating effects.

[0031] The fourth layer of the pipe from the inside out is a super-strong and tough protective layer to prevent leakage, using ultra-high... Ultra-high molecular weight polyethylene (UHMWPE) is an insulating material, thus preventing electrical leakage. The specific strength of UHMWPE fiber is 15 times that of steel, making it both wear-resistant and tough, thus preventing rodent bites and bird pecks.

[0032] The structure of the pipe can be any one or more of these four layers.

[0033] The tubing is manufactured into silicon core tubes or solid wall tubes according to its size, and can also be made into plum blossom tubes or grid tubes.

[0034] Ultra-high molecular weight polyethylene (UHMWPE) pipes are prone to bubble / pore formation during extrusion. The main reasons are: UHMWPE melt has extremely high viscosity, poor fluidity, is difficult to plasticize, difficult to degas, and is easily degraded. Combined with the raw material's moisture absorption and improper processes / equipment, gases (water vapor, air, degradation gases) cannot escape, leading to bubble formation. Based on years of repeated experiments, the following process has been developed to solve this problem: 1) Previously, the industry generally believed that the temperature during melt extrusion should not exceed 200℃, but repeated practice has proven that bubbles will not appear when the temperature is controlled between 210℃ and 230℃; 2) Thoroughly dry the raw material; 3) Isolate from oxygen or purge with nitrogen; 4) Proper pressure control: melt pressure approximately 35 MPa, molding pressure approximately 10-30 MPa.

[0035] In summary, the pipe material is extremely strong and tough, and can prevent fire, rodents, birds, electric leakage, digging, crushing, settlement, heat preservation, and cold insulation, thus achieving the purpose of protecting optical cables and electrical cables, saving lives, and protecting people's lives and property.

[0036] 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 entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," and 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, and elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A super-tough, fire-resistant, rodent-proof, bird-proof, leak-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe, characterized in that: The pipe has a multi-layer structure. The first layer from the inside to the outside is a super tough and smooth layer (1), which is made of ultra-high molecular weight polyethylene. The inner wall of existing silicon core tubes is composed of a silicone solid lubricating layer with a static friction coefficient ≤0.25 and a dynamic friction coefficient ≤0.15; while ultra-high molecular weight polyethylene has self-lubricating properties: a static friction coefficient of about 0.07 to 0.15 and a dynamic friction coefficient of about 0.05 to 0.10; significantly reducing the resistance of optical cable laying, and its performance is far superior to that of existing silicon core tubes.

2. The super-tough, fireproof, rodent-proof, bird-proof, leakage-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-insulating silicon core tube solid wall pipe according to claim 1, characterized in that: The second layer of the pipe from the inside out is a heat insulation layer (2), wherein the synthetic material is selected from the group consisting of: intumescent fire retardant coatings, intumescent fire retardant paints, graphite, silica sol, alumina, aluminum foil or aramid, and any combination thereof.

3. The super-tough, fireproof, rodent-proof, bird-proof, leakage-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe according to claim 2, characterized in that: The third layer of the pipe from the inside out is a fireproof, heat-insulating, and cold-insulating layer (3), wherein the synthetic material is selected from the group consisting of: high-silica fiberglass cloth, fire-retardant coated fiberglass cloth, silicone rubber coated fiberglass cloth, basalt fiber fireproof cloth, acrylic cotton fiber fireproof cloth, Nomex fireproof cloth, ceramic fiber cloth, aluminum silicate fiber cloth, blue fiberglass fireproof cloth, aluminum foil fireproof cloth, and other fireproof cloths, as well as any combination thereof. The thermal conductivity of high-silica cloth at room temperature is only about 0.03 W / m·K to 0.04 W / m·K, indicating that it has a very good heat-insulating and cold-insulating effect.

4. A super-tough, fireproof, rodent-proof, bird-proof, leak-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe according to claim 3, characterized in that: The fourth layer of the pipe from the inside out is a super-tough protective layer (4) to prevent leakage, which is made of ultra-high molecular weight polyethylene. Ultra-high molecular weight polyethylene is insulating, so it prevents leakage; the specific strength of ultra-high molecular weight polyethylene fiber is 15 times that of steel, which is both wear-resistant and tough, so it is protected against rodent bites and bird pecks.

5. The super-tough, fireproof, rodent-proof, bird-proof, leakage-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe according to claim 4, characterized in that: The structure of the pipe can be any one or more of these four layers.

6. The super-tough, fireproof, rodent-proof, bird-proof, leakage-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-insulating silicon core tube solid wall pipe according to claim 5, characterized in that: The tubing can be made into silicon core tubes or solid wall tubes depending on the size; it can also be made into plum blossom tubes or grid tubes.

7. The super-tough, fireproof, rodent-proof, bird-proof, leakage-proof, digging-proof, crush-proof, settlement-proof, heat-insulating, and cold-resistant silicon core tube solid wall pipe according to claim 6, characterized in that: Ultra-high molecular weight polyethylene (UHMWPE) pipes are prone to generating bubbles / pores during extrusion. The main reasons are: UHMWPE melt has extremely high viscosity, extremely poor fluidity, is difficult to plasticize, difficult to degas, and is easily degraded. In addition, the raw materials absorb moisture, and improper processes / equipment prevent the gases (water vapor, air, degradation gases) from being discharged, thus forming bubbles. Based on years of repeated experiments, the following process has been developed to solve this problem: 1) Previously, the industry generally believed that the temperature during melt extrusion should not exceed 200℃, but repeated practice has proven that when the temperature is controlled at 210℃-230℃, no bubbles will appear; 2) The raw materials are thoroughly dried; 3) Oxygen is isolated or nitrogen is used for filling; 4) The pressure is properly controlled: the melt pressure is about 35 MPa, and the molding pressure is about 10-16 MPa.

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