High polymer material pipe fitting with flame retardant capability
By using polymer material pipe fittings with a multi-layer structure, combined with the design of flame-retardant coatings and tensile-reinforced built-in components, the problems of insufficient flame retardant performance, buffering performance and tensile performance of existing pipe fittings are solved, and higher safety is achieved. performance and service life.
Patent Information
- Application Number
- CN202323648348.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The flame retardant, buffering and tensile properties of existing pipe fittings are insufficient, and they are prone to damage when fire occurs or external forces, resulting in fluid leakage and affecting the safety of use.
It adopts a wear-resistant flame-retardant outer layer, a metal mesh-reinforced outer layer, an ultra-high molecular polyethylene flame-retardant outer layer, a heat shrink sleeve, a compressed polyurethane sealing layer, a metal mesh-reinforced inner layer, an elastic polyurethane layer and an ultra-high molecular polyethylene layer. The pipe body is composed of a flame-retardant inner layer of vinyl, combined with the use of an adhesive layer and flame-retardant coating, a metal mesh reinforcement layer and the design of tensile-reinforced built-in components.
It improves the external and internal flame retardant properties of the pipe fittings, enhances the tensile and compressive properties, extends the service life, and achieves secondary sealing in the event of damage to avoid fluid leakage and improve use safety.
Smart Images
Figure CN222377444U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipe fittings, in particular to a polymer material pipe fitting with flame retardancy. Background Art
[0002] Pipe fittings are widely used in various fields, especially in the electric power and gas transmission fields, where the probability of fire is relatively high, and high requirements are placed on the fire retardant properties of pipe fittings.
[0003] The flame retardant performance of the pipes currently in use is poor, and it is impossible to take into account the simultaneous flame retardancy of the outer and inner layers of the pipes. In addition, the existing pipes have poor buffering effects. When the fluid flows through the pipes and generates vibrations or impacts, it is easy to cause damage to the pipes. When the pipes are subjected to external tension or extrusion force and the pipes are pulled apart or damaged, it is easy to cause fluid leakage, affecting the safety of use. Therefore, the present application proposes a polymer material pipe with flame retardant ability. Utility Model Content
[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a polymer material pipe fitting with flame retardancy, which effectively solves the problems of poor flame retardancy, buffering performance and tensile strength of the existing pipe fittings.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polymer material pipe fitting with flame retardant ability, comprising a pipe fitting body, wherein the pipe fitting body is composed of a wear-resistant flame retardant outer layer, a metal mesh reinforced outer layer, an ultra-high molecular weight polyethylene flame retardant outer layer, a heat shrinkable tube sleeve, a compressed polyurethane sealing layer, a metal mesh reinforced inner layer, an elastic polyurethane layer and an ultra-high molecular weight polyethylene flame retardant inner layer, the wear-resistant flame retardant outer layer is sleeved on the outer surface of the ultra-high molecular weight polyethylene flame retardant outer layer, the metal mesh reinforced outer layer is fixedly connected between the wear-resistant flame retardant outer layer and the ultra-high molecular weight polyethylene flame retardant outer layer, the ultra-high molecular weight polyethylene flame retardant outer layer is sleeved on the outer surface of the heat shrinkable tube sleeve, the heat shrinkable tube sleeve is sleeved on the outer surface of the compressed polyurethane sealing layer, the compressed polyurethane sealing layer is sleeved on the outer surface of the elastic polyurethane layer, the metal mesh reinforced inner layer is fixedly connected between the compressed polyurethane sealing layer and the elastic polyurethane layer, and the elastic polyurethane layer is sleeved on the outer surface of the ultra-high molecular weight polyethylene flame retardant inner layer.
[0006] Preferably, the contact surfaces of the wear-resistant flame-retardant outer layer, the ultra-high molecular weight polyethylene flame-retardant outer layer, the heat shrinkable tube sleeve, the compressed polyurethane sealing layer, the elastic polyurethane layer and the ultra-high molecular weight polyethylene flame-retardant inner layer are all bonded and connected by an adhesive layer.
[0007] Preferably, the outer surface of the wear-resistant flame-retardant outer layer is coated with an outer flame-retardant coating, and the inner surface of the ultra-high molecular polyethylene flame-retardant inner layer is coated with an inner flame-retardant coating.
[0008] Preferably, the metal mesh reinforcement outer layer and the metal mesh reinforcement inner layer are both woven from spiral metal wire one and spiral metal wire two, the spiral directions of spiral metal wire one and spiral metal wire two are opposite, and spiral metal wire one and spiral metal wire two are spot-welded.
[0009] Preferably, the compressed polyurethane sealing layer is composed of a flexible polyurethane sleeve body and a tensile reinforcement built-in component, the tensile reinforcement built-in component is fixedly connected to the inside of the flexible polyurethane sleeve body, the compressed polyurethane sealing layer has a corrugated structure, and the compressed polyurethane sealing layer is compressed and connected to the inside of the heat shrink tube sleeve.
[0010] Preferably, the tensile reinforcement built-in component is composed of a plurality of tensile metal wires, a plurality of metal limiting spheres and a plurality of metal short fibers, the metal limiting spheres are fixedly connected to the tensile metal wires, the metal short fibers are fixedly connected to the surface of the tensile metal wires and diffusely penetrate into the interior of the flexible polyurethane sleeve body.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] (1) During operation, by providing a pipe body composed of a wear-resistant flame-retardant outer layer, a metal mesh reinforced outer layer, an ultra-high molecular polyethylene flame-retardant outer layer, a heat-shrinkable tube sleeve, a compressed polyurethane sealing layer, a metal mesh reinforced inner layer, an elastic polyurethane layer and an ultra-high molecular polyethylene flame-retardant inner layer, the external flame-retardant and internal flame-retardant properties of the pipe can be improved, and the safety of the pipe can be improved. By providing a metal mesh reinforced outer layer woven by spiral metal wire one and spiral metal wire two and a metal mesh reinforced inner layer, the tensile and compressive properties of the pipe can be improved, and the service life of the pipe can be improved.
[0013] (2) By providing a compressed polyurethane sealing layer composed of a flexible polyurethane sleeve body and a tensile reinforcement built-in component, and a tensile reinforcement built-in component composed of a plurality of tensile metal wires, a plurality of metal limiting balls and a plurality of metal short fibers, it is possible to achieve a secondary sealing effect when the pipe is subjected to external tension, pressure or torsion, causing the pipe to break, crack or break, thereby avoiding leakage of the internal fluid and improving the safety of use. At the same time, it is also possible to improve the tensile strength of the compressed polyurethane sealing layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.
[0015] In the attached picture:
[0016] Figure 1 This is a schematic diagram of the structure of the polymer material pipe fitting with flame retardancy of the utility model;
[0017] Figure 2 This is a schematic diagram of the partial structure of the polymer material pipe fitting with flame retardancy of the utility model;
[0018] Figure 3 This is a cross-sectional view of the compressed polyurethane sealing layer of the utility model;
[0019] Figure 4 For this utility model Figure 3 A partial enlarged view of
[0020] Figure 5 This is a schematic diagram of the structure of the tensile reinforcement built-in component of the utility model;
[0021] In the figure: 1. Pipe body; 2. Wear-resistant and flame-retardant outer layer; 3. Metal mesh reinforced outer layer; 4. Ultra-high molecular weight polyethylene flame-retardant outer layer; 5. Heat shrinkable tube sleeve; 6. Compressed polyurethane sealing layer; 7. Metal mesh reinforced inner layer; 8. Elastic polyurethane layer; 9. Ultra-high molecular weight polyethylene flame-retardant inner layer; 10. Adhesive layer; 11. External flame-retardant coating; 12. Internal flame-retardant coating; 13. Spiral metal wire one; 14. Spiral metal wire two; 15. Flexible polyurethane sleeve body; 16. Tensile-resistant reinforced built-in component; 17. Tensile-resistant metal wire; 18. Metal limiting sphere; 19. Metal staple fiber. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0023] Depend on Figure 1 and Figure 2The utility model provides a polymer material pipe fitting with flame retardant ability, comprising a pipe fitting body 1, the pipe fitting body 1 is composed of a wear-resistant flame retardant outer layer 2, a metal mesh reinforced outer layer 3, an ultra-high molecular polyethylene flame retardant outer layer 4, a heat shrinkable tube sleeve 5, a compressed polyurethane sealing layer 6, a metal mesh reinforced inner layer 7, an elastic polyurethane layer 8 and an ultra-high molecular polyethylene flame retardant inner layer 9, the wear-resistant flame retardant outer layer 2 is sleeved on the outer surface of the ultra-high molecular polyethylene flame retardant outer layer 4, the metal mesh reinforced outer layer 3 is fixedly connected between the wear-resistant flame retardant outer layer 2 and the ultra-high molecular polyethylene flame retardant outer layer 4, the ultra-high molecular polyethylene flame retardant outer layer 4 is sleeved on the outer surface of the heat shrinkable tube sleeve 5, the heat shrinkable tube sleeve 5 is sleeved on the outer surface of the compressed polyurethane sealing layer 6, the compressed polyurethane sealing layer 6 is sleeved on the outer surface of the elastic polyurethane layer 8, the metal mesh reinforced inner layer 7 is fixedly connected between the compressed polyurethane sealing layer 6 and the elastic polyurethane layer 8, and the elastic polyurethane layer 8 is sleeved on the outer surface of the ultra-high molecular polyethylene flame retardant inner layer 9;
[0024] The wear-resistant and flame-retardant outer layer 2, the metal mesh reinforced outer layer 3 and the ultra-high molecular polyethylene flame-retardant outer layer 4 can improve the wear resistance, flame retardancy and tensile strength of the outer part of the pipe. The metal mesh reinforced inner layer 7 and the ultra-high molecular polyethylene flame-retardant inner layer 9 can improve the flame retardancy and tensile strength of the inner part of the pipe, thereby improving the safety and service life of the pipe. The elastic polyurethane layer 8 can improve the buffering performance, thereby weakening the impact force of the fluid and avoiding damage to the pipe.
[0025] Depend on Figure 1 and Figure 2 It is provided that the contact surfaces of the wear-resistant flame-retardant outer layer 2, the ultra-high molecular weight polyethylene flame-retardant outer layer 4, the heat shrinkable tube sleeve 5, the compressed polyurethane sealing layer 6, the elastic polyurethane layer 8 and the ultra-high molecular weight polyethylene flame-retardant inner layer 9 are all bonded and connected by an adhesive layer 10, the outer surface of the wear-resistant flame-retardant outer layer 2 is coated with an outer flame-retardant coating 11, and the inner surface of the ultra-high molecular weight polyethylene flame-retardant inner layer 9 is coated with an inner flame-retardant coating 12;
[0026] The flame retardant performance can be further improved by providing the outer flame retardant coating 11 and the inner flame retardant coating 12;
[0027] Depend on Figure 2 It is shown that the metal mesh reinforcement outer layer 3 and the metal mesh reinforcement inner layer 7 are both woven by spiral metal wire 13 and spiral metal wire 2 14, the spiral directions of spiral metal wire 13 and spiral metal wire 2 14 are opposite, and the spiral metal wire 13 and spiral metal wire 2 14 are spot-welded;
[0028] The spiral metal wire 13 and the spiral metal wire 2 14 can improve the overall compression resistance of the pipe fitting, and at the same time can improve the internal compression resistance;
[0029] Depend on Figures 2 to 5It is given that the compression type polyurethane sealing layer 6 is composed of a flexible polyurethane sleeve body 15 and a tensile reinforcement built-in component 16, the tensile reinforcement built-in component 16 is fixedly connected to the inside of the flexible polyurethane sleeve body 15, the compression type polyurethane sealing layer 6 has a corrugated structure, the compression type polyurethane sealing layer 6 is compressed and connected to the inside of the heat shrink tube sleeve 5, the tensile reinforcement built-in component 16 is composed of a plurality of tensile metal wires 17, a plurality of metal limiting spheres 18 and a plurality of metal short fibers 19, the metal limiting spheres 18 are fixedly connected to the tensile metal wires 17, the metal short fibers 19 are fixedly connected to the surface of the tensile metal wires 17 and diffusely interspersed in the inside of the flexible polyurethane sleeve body 15;
[0030] When the pipe is subjected to external tension, pressure or torsion, causing it to break, crack or break, the compressed polyurethane sealing layer 6 is exposed. Since the compressed polyurethane sealing layer 6 is now freed from the external limiting effect, it can achieve expansion movement and can withstand a certain amount of tension, pressure and torsion without being damaged, thereby avoiding fluid leakage and providing maintenance personnel with sufficient time to avoid losses. The tensile strength of the compressed polyurethane sealing layer 6 can be further improved by means of the tensile metal wire 17, a plurality of metal limiting balls 18 and a plurality of metal short fibers 19.
[0031] During operation, by providing a pipe body composed of a wear-resistant flame-retardant outer layer, a metal mesh reinforced outer layer, an ultra-high molecular polyethylene flame-retardant outer layer, a heat shrinkable tube sleeve, a compressed polyurethane sealing layer, a metal mesh reinforced inner layer, an elastic polyurethane layer and an ultra-high molecular polyethylene flame-retardant inner layer, the external flame-retardant and internal flame-retardant properties of the pipe can be improved, and the safety of the use of the pipe can be improved; by providing a metal mesh reinforced outer layer woven by spiral metal wire one and spiral metal wire two and a metal mesh reinforced inner layer, the tensile and compressive properties of the pipe can be improved, and the service life of the pipe can be improved; by providing a compressed polyurethane sealing layer composed of a flexible polyurethane sleeve body and a tensile reinforcement built-in component and a tensile reinforcement built-in component composed of a number of tensile metal wires, a number of metal limiting spheres and a number of metal short fibers, when the pipe is broken, cracked or damaged by external tension, pressure or torsion, a secondary sealing effect can be achieved to avoid leakage of internal fluid, improve the safety of use, and also improve the tensile strength of the compressed polyurethane sealing layer.
Claims
1. A flame retardant polymer pipe, comprising a pipe body (1), characterized in that: The pipe body (1) is composed of a wear-resistant and flame-retardant outer layer (2), a metal mesh reinforced outer layer (3), an ultra-high molecular polyethylene flame-retardant outer layer (4), a heat shrinkable tube sleeve (5), a compressed polyurethane sealing layer (6), a metal mesh reinforced inner layer (7), an elastic polyurethane layer (8) and an ultra-high molecular polyethylene flame-retardant inner layer (9); the wear-resistant and flame-retardant outer layer (2) is sleeved on the outer surface of the ultra-high molecular polyethylene flame-retardant outer layer (4); the metal mesh reinforced outer layer (3) is fixedly connected to the wear-resistant and flame-retardant outer layer (2) and the ultra-high molecular polyethylene The ultra-high molecular polyethylene flame retardant outer layer (4) is sleeved on the outer surface of the heat shrink tube sleeve (5), the heat shrink tube sleeve (5) is sleeved on the outer surface of the compressed polyurethane sealing layer (6), the compressed polyurethane sealing layer (6) is sleeved on the outer surface of the elastic polyurethane layer (8), the metal mesh reinforcement inner layer (7) is fixedly connected between the compressed polyurethane sealing layer (6) and the elastic polyurethane layer (8), and the elastic polyurethane layer (8) is sleeved on the outer surface of the ultra-high molecular polyethylene flame retardant inner layer (9).
2. The flame retardant polymer pipe according to claim 1, characterized in that: The contact surfaces of the wear-resistant flame-retardant outer layer (2), the ultra-high molecular weight polyethylene flame-retardant outer layer (4), the heat shrinkable tube sleeve (5), the compressed polyurethane sealing layer (6), the elastic polyurethane layer (8) and the ultra-high molecular weight polyethylene flame-retardant inner layer (9) are all bonded and connected via an adhesive layer (10).
3. The flame retardant polymer pipe according to claim 1, characterized in that: The outer surface of the wear-resistant flame-retardant outer layer (2) is coated with an outer flame-retardant coating (11), and the inner surface of the ultra-high molecular polyethylene flame-retardant inner layer (9) is coated with an inner flame-retardant coating (12).
4. The flame retardant polymer pipe according to claim 1, characterized in that: The metal mesh reinforcement outer layer (3) and the metal mesh reinforcement inner layer (7) are both woven from spiral metal wire one (13) and spiral metal wire two (14), the spiral directions of the spiral metal wire one (13) and the spiral metal wire two (14) are opposite, and the spiral metal wire one (13) and the spiral metal wire two (14) are spot-welded.
5. The flame retardant polymer pipe fitting according to claim 1, characterized in that: The compressed polyurethane sealing layer (6) is composed of a flexible polyurethane sleeve body (15) and a tensile reinforcement built-in component (16); the tensile reinforcement built-in component (16) is fixedly connected to the inside of the flexible polyurethane sleeve body (15); the compressed polyurethane sealing layer (6) has a corrugated structure; and the compressed polyurethane sealing layer (6) is compressed and connected to the inside of the heat shrinkable tube sleeve (5).
6. The flame retardant polymer pipe according to claim 5, characterized in that: The tensile reinforcement built-in component (16) is composed of a plurality of tensile metal wires (17), a plurality of metal limiting spheres (18) and a plurality of metal short fibers (19); the metal limiting spheres (18) are fixedly connected to the tensile metal wires (17); the metal short fibers (19) are fixedly connected to the surface of the tensile metal wires (17) and diffusely penetrate into the interior of the flexible polyurethane sleeve body (15).