High-barrier low-temperature-resistant non-metal pipeline
By using the combination of materials such as polytetrafluoroethylene, twisted industrial filaments, mineral wool, basalt winding belts and polyethylene in mine conveying pipelines, the corrosion and impermanence of traditional pipelines in low-temperature and humid environments is solved, and higher safety and working efficiency are achieved.
Patent Information
- Application Number
- CN202422363423.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Traditional mine conveying pipelines are prone to corrosion in low-temperature humid environments, and are not resistant to low temperatures, pose safety hazards, and are heavy and inconvenient to carry.
Non-metallic pipelines with high barrier resistance and low temperature resistance are adopted, including polytetrafluoroethylene liner, twisted industrial filament winding reinforcement layer, mineral wool cryogenic layer, basalt winding high barrier layer and polyethylene outer cladding layer. The pressure bearing capacity, corrosion protection, thermal insulation and fire resistance of the pipeline are improved through the combination of these layers.
It effectively avoids corrosion of pipelines in low temperature and humid environments, improves safety and work efficiency, reduces handling pressure, and reduces material weight.
Smart Images
Figure CN222977622U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of mine pipeline transportation, and particularly relates to a non-metallic pipeline with high barrier property and low temperature resistance. Background Technique
[0002] Coal mine pipelines are important equipment in mine operations, and their role in processes such as mine water discharge and filling material transportation cannot be ignored. Among them, the operation efficiency of mine transportation pipelines will directly affect the coal production capacity of the mine. Therefore, the research on the performance of mine transportation pipelines is crucial.
[0003] At present, traditional mine transportation pipelines are mostly metal pipelines. During ground transportation, they face a low-temperature environment. The metal pipelines themselves have a low tolerance to low temperatures and are prone to damage when in a low-temperature environment for a long time. Secondly, the underground environment is mostly humid, and metal pipelines are extremely prone to corrosion in a low-temperature and humid environment. Using corroded pipelines for transportation operations poses a great safety hazard. Once a safety accident occurs, it will greatly affect the operation progress. Moreover, metal pipelines are usually heavy, and it takes a lot of time and effort for workers to carry them. Content of the Utility Model
[0004] The purpose of the utility model is to provide a non-metallic pipeline with high barrier property and low temperature resistance, which solves the problems of easy corrosion and low temperature intolerance of pipelines in the prior art and ensures the stable operation of the transportation pipeline.
[0005] The technical solution adopted by the utility model is that the non-metallic pipeline with high barrier property and low temperature resistance includes a lining layer located inside the pipe body. An enhancement layer for improving the pressure-bearing capacity of the pipeline is wound outside the lining layer. An anti-low-temperature layer for heat preservation is bonded outside the enhancement layer. A high-barrier layer is connected outside the anti-low-temperature layer. An outer coating layer for resisting ultraviolet rays is connected outside the high-barrier layer. One end of the outer coating layer is connected with a joint, and adjacent pipelines are connected through the joint.
[0006] The utility model is further characterized in that
[0007] The lining layer is polytetrafluoroethylene.
[0008] The enhancement layer is formed by winding industrial filament yarns, and the winding angle is 45° - 50°.
[0009] The anti-low-temperature layer is mineral wool.
[0010] The high-barrier layer is a basalt winding tape, and the basalt winding tape is wound outside the anti-low-temperature layer.
[0011] The outer coating layer is polyethylene, and external connection threads are milled at both ends of the outer coating layer.
[0012] The joint includes a sleeve, with a core pipe press-fitted on the inner side of the sleeve. Connecting internal threads for mating connection with the connecting external threads are provided on the inner wall of the sleeve opposite to both ends of the core pipe.
[0013] The beneficial effects of the present utility model are as follows:
[0014] (1) For the non-metallic pipe with high barrier property and low temperature resistance of the present utility model, polytetrafluoroethylene is used as the inner lining layer to ensure the material transportation, and industrial filament yarns are wound around the outer side of the inner lining layer as the reinforcement layer to improve the overall pressure-bearing capacity of the pipe. Abandoning the traditional metal material and replacing it with a composite material makes it difficult for the pipe to corrode even in the humid environment of the mine, improving the operation safety.
[0015] (2) For the non-metallic pipe with high barrier property and low temperature resistance of the present utility model, a mineral wool layer is used to form a low temperature resistant layer wrapped around the outer side of the reinforcement layer, effectively avoiding the damage to the pipe caused by the low temperature environment during overhead laying. At the same time, a basalt winding tape is used to form a high barrier layer on the outer side of the low temperature resistant layer, making the pipe have the characteristics of fire prevention, insulation, and high tensile strength. The overall material weight of the pipe is significantly reduced compared with the existing metal pipes, reducing the handling pressure of the staff and improving the work efficiency. Description of the Drawings
[0016] Figure 1 is a schematic structural view of the non-metallic pipe with high barrier property and low temperature resistance of the present utility model;
[0017] Figure 2 is a cross-sectional view of the non-metallic pipe with high barrier property and low temperature resistance of the present utility model;
[0018] Figure 3 is a winding schematic view of the reinforcement layer in the present utility model;
[0019] Figure 4 is a schematic structural view of the joint in the present utility model;
[0020] Figure 5 is a schematic view of the connection between the joint and the outer coating layer in the present utility model.
[0021] In the figure, 1. Inner lining layer, 2. Reinforcement layer, 3. Low temperature resistant layer, 4. High barrier layer, 5. Outer coating layer, 5-1. Connecting external thread, 6. Joint, 6-1. Sleeve, 6-2. Core pipe, 6-3. Connecting internal thread. Detailed Implementation Modes
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0023] Embodiment 1
[0024] The non-metallic pipeline with high barrier and low temperature resistance of the present utility model, such as Figure 1 shown, includes a pipe body and a joint 6 connected to one end of the pipe body. As Figure 2 shown, the pipe body includes a lining layer 1 located inside the pipe body. An enhancement layer 2 for improving the pressure-bearing capacity of the pipeline is wound outside the lining layer 1. An anti-low temperature layer 3 for heat preservation is bonded outside the enhancement layer 2. A high barrier layer 4 is connected outside the anti-low temperature layer 3. An outer coating layer 5 for resisting ultraviolet rays is connected outside the high barrier layer 4.
[0025] That is, the present utility model forms a pipe body by sequentially arranging a lining layer 1, an enhancement layer 2, an anti-low temperature layer 3, a high barrier layer 4, and an outer coating layer 5 from the inside to the outside. A joint 6 is provided at one end of the pipe body, and adjacent pipe bodies are connected through the joint 6 to form the entire mine conveying pipeline.
[0026] Embodiment 2
[0027] The non-metallic pipeline with high barrier and low temperature resistance of the present utility model includes a lining layer 1, an enhancement layer 2, an anti-low temperature layer 3, a high barrier layer 4, and an outer coating layer 5 sequentially arranged from the inside of the pipe body to the outside of the pipe body.
[0028] Further, the lining layer 1 is made of polytetrafluoroethylene. By using polytetrafluoroethylene as the composition material of the lining layer 1, the inner wall of the lining layer 1 is smooth, which is convenient for the conveying of materials and improves the conveying efficiency of materials.
[0029] Further, as Figure 3 shown, the enhancement layer 2 is formed by winding industrial filament yarns, which further improves the pressure-bearing capacity of the non-metallic pipeline of the present utility model.
[0030] Further, the anti-low temperature layer 3 is made of mineral wool. Mineral wool includes solid wastes such as coal gangue and fly ash and is an excellent heat insulation material. By using mineral wool to prepare the anti-low temperature layer 3 of the pipeline, the present utility model effectively avoids the risk of the pipeline being damaged by low temperature in the low-temperature environment of the mine.
[0031] Furthermore, the high-barrier layer 4 is a basalt winding tape, which is wound around the outside of the low-temperature resistant layer 3. The basalt winding tape has excellent properties of fire resistance, insulation, and high tensile strength. By using the basalt winding tape to form the high-barrier layer 4, the damage of open fire to the pipeline is effectively prevented, and at the same time, the overall strength of the pipeline is improved.
[0032] Furthermore, the outer coating layer 5 is made of polyethylene, which has the property of sun protection. Laying the polyethylene on the outermost side can effectively resist the damage of ultraviolet rays and extend the service life of the pipeline for transportation operations above the well.
[0033] Furthermore, as Figure 4 shown, the joint 6 includes a sleeve 6-1, a core pipe 6-2 is press-fitted inside the sleeve 6-1, and connecting internal threads 6-3 are provided on the inner wall of the sleeve 6-1 opposite to both ends of the core pipe 6-2.
[0034] As Figure 5 shown, connecting external threads 5-1 that are matched and connected with the connecting internal threads 6-3 are also milled at both ends of the outer coating layer 5. When connecting the pipelines, the connecting external threads 5-1 on the outer coating layer 5 are docked with the joint 6, and the pipe body is rotated so that the pipe body is tightly connected and fixed with the joint 6.
[0035] Embodiment 3
[0036] The non-metallic pipeline with high-barrier and low-temperature resistance of the present utility model successively has from the pipe body to the outside of the pipe body:
[0037] The inner lining layer 1 is composed of a composite polytetrafluoroethylene material, and its inner wall is smooth, which is convenient for the transportation of slurry.
[0038] The reinforcing layer 2 is composed of twisted industrial filaments, and the winding angle is 45° - 50°, which further improves the pressure-bearing capacity of the composite non-metallic pipeline.
[0039] The low-temperature resistant layer 3 is composed of mineral wool and is used to isolate low-temperature damage.
[0040] The high-barrier layer 4 is composed of a basalt winding tape, which is wound around the outside of the low-temperature resistant layer 3, and the winding angle is 45° - 50°, and is used for fire protection and insulation.
[0041] The outer coating layer 5 uses a polyethylene sun protection material and is used to resist the damage of ultraviolet rays and reduce the damage to the pipeline.
[0042] Connecting external threads 5-1 are provided at both ends of the outer coating layer 5. One end of the outer coating layer 5 is connected with a joint 6 through the connecting external threads 5-1, and adjacent pipelines are connected through the joint 6.
Claims
1. High barrier and low temperature resistant non-metallic pipes, characterized by: The invention comprises an inner lining layer (1) located inside a pipe body, a reinforcement layer (2) for improving the pressure bearing capacity of the pipe is wound around the outer side of the inner lining layer (1), an anti-low temperature layer (3) for heat preservation is bonded to the outer side of the reinforcement layer (2), a high barrier layer (4) is connected to the outer side of the anti-low temperature layer (3), an outer coating layer (5) for resisting ultraviolet rays is connected to the outer side of the high barrier layer (4), one end of the outer coating layer (5) is connected to a joint (6), and adjacent pipes are connected via the joint (6).
2. The high-barrier and low-temperature-resistant non-metallic pipeline according to claim 1 is characterized in that: The inner lining layer (1) is polytetrafluoroethylene.
3. The high-barrier and low-temperature-resistant non-metallic pipe according to claim 1 is characterized in that: The reinforcing layer (2) is formed by twisting industrial filaments, and the winding angle is 45° to 50°.
4. The high-barrier and low-temperature-resistant non-metallic pipe according to claim 1 is characterized in that: The anti-low temperature layer (3) is mineral wool.
5. The high-barrier and low-temperature-resistant non-metallic pipeline according to claim 1 is characterized in that: The high barrier layer (4) is a basalt winding belt, and the basalt winding belt is wound around the outside of the low temperature resistance layer (3).
6. The high-barrier and low-temperature-resistant non-metallic pipeline according to claim 1 is characterized in that: The outer coating layer (5) is made of polyethylene, and both ends of the outer coating layer (5) are milled with connecting external threads (5-1).
7. The high-barrier, low-temperature-resistant non-metallic pipeline according to claim 6 is characterized in that: The joint (6) comprises a sleeve (6-1), a core tube (6-2) is interference-fittedly arranged on the inner side of the sleeve (6-1), and connecting internal threads (6-3) are arranged at both ends of the inner wall of the sleeve (6-1) relative to the core tube (6-2) and are matched with the connecting external threads (5-1).