High-strength armored metal-coated hose

Abstract

The utility model relates to a high-strength armored metal-coated flexible pipe, which comprises an inner pipe, an armored layer and a reinforcing layer, the armored layer is arranged on the outer side of the inner pipe, and the reinforcing layer is arranged on the outer side of the armored layer; a reinforcing layer is arranged on the inner wall of the inner pipe, a buffering and damping layer is arranged on the outer side of the reinforcing layer, the buffering and damping layer is composed of a honeycomb structure made of rubber, each hexagonal cavity of the honeycomb structure is filled with high-elasticity sponge, spiral flow guide protrusions are arranged on the inner wall of the inner pipe, and the spiral flow guide protrusions spirally extend in the axial direction of the inner pipe. The annular buffering and damping layer is arranged on the outer side of the reinforcing layer, the annular buffering and damping layer is composed of a honeycomb-shaped structure made of rubber, each hexagonal cavity is filled with high-elasticity sponge, the honeycomb-shaped structure achieves vibration energy absorption through rubber deformation and sponge elasticity, external impact can be buffered, and the damping effect is good. The service life of the hose is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of metal-clad flexible hose technology, and in particular to a high-strength armored metal-clad flexible hose. Background Technology

[0002] Gas fuels are a general term for gaseous fuels that can burn and release heat for use by residents and industrial enterprises. There are many types of gas fuels, mainly including natural gas, manufactured gas, liquefied petroleum gas, biogas, and coal gas.

[0003] A search revealed a high-strength armored metal-clad flexible hose (publication number CN217899101U), relating to the technical field of metal-clad flexible hose equipment. The hose includes a body comprising an inner tube, an armor layer, and a reinforcing layer. The armor layer is located outside the inner tube, and the reinforcing layer is located outside the armor layer. Connectors are symmetrically arranged at both ends of the hose. The armor layer provides excellent protection for the inner tube, significantly improving the strength of the metal-clad flexible hose and preventing damage from wear, rodent bites, and sharp objects, thus extending the service life of the device. The pressure-bearing spring, combined with the armor layer, gives the metal-clad flexible hose strong pressure resistance, preventing easy deformation. The reinforcing layer provides the outer surface of the metal-clad flexible hose with good waterproof, wear-resistant, and corrosion-resistant properties. The flame-retardant braided layer further enhances the external strength of the metal-clad flexible hose and has good flame-retardant capabilities, resulting in higher safety.

[0004] When the device in the disclosed patent is in use, the internal structure of the hose is easily damaged when it is subjected to vibration and impact under complex working conditions. Furthermore, when it is used to transport fluids containing impurities, the impurities in the recessed parts of the corrugated inner tube are not easy to clean because the inner tube has a corrugated structure. Utility Model Content

[0005] In response to the technical problems in existing patents, such as the internal structure of the hose being easily damaged when exposed to vibration and impact under complex working conditions, and the difficulty in cleaning impurities from the recessed parts of the corrugated inner tube when used to transport fluids containing impurities, this utility model provides a high-strength armored metal-coated hose.

[0006] The technical solution adopted by this utility model is: a high-strength armored metal-coated flexible tube, including an inner tube, an armor layer, and a reinforcing layer, wherein the armor layer is disposed on the outside of the inner tube, and the reinforcing layer is disposed on the outside of the armor layer;

[0007] A buffer and shock-absorbing layer is provided on the outside of the reinforcing layer. The buffer and shock-absorbing layer is composed of a honeycomb structure made of rubber. Each hexagonal cavity of the honeycomb structure is filled with highly elastic sponge. The inner wall of the inner tube is provided with a spiral flow guiding protrusion. The spiral flow guiding protrusion extends spirally along the axial direction of the inner tube. The cross-section of the spiral flow guiding protrusion is semi-circular.

[0008] Furthermore, the armor layer is a tubular dense stainless steel wire mesh composite layer, and a pressure-bearing spring is provided between the inner tube and the armor layer. The pressure-bearing spring is arranged around the outer wall of the inner tube, and a spiral groove adapted to the pressure-bearing spring is provided on the outer wall of the inner tube. The pressure-bearing spring is embedded in the spiral groove. The reinforcing layer is a PVC flexible hose, and a flame-retardant braided layer is provided between the armor layer and the reinforcing layer. The flame-retardant braided layer is an aramid flame-retardant fiber braided layer. The two ends of the tube are symmetrically provided with joints, and the joints are provided with connecting flanges.

[0009] Furthermore, an antistatic layer is provided on the buffer and shock-absorbing layer, which is a thermoplastic elastomer layer with a permanent antistatic agent added.

[0010] Furthermore, the outer side of the antistatic layer is provided with a wear-resistant protective layer, which is woven from ultra-high molecular weight polyethylene.

[0011] Furthermore, a waterproof and breathable layer is provided on the outside of the wear-resistant protective layer, which is a polytetrafluoroethylene microporous membrane layer.

[0012] Furthermore, an ultraviolet-resistant layer is provided on the outside of the waterproof and breathable layer, which is a polyurethane coating with added ultraviolet absorbers.

[0013] The beneficial effects of this utility model are:

[0014] By setting an annular buffer and shock-absorbing layer on the outside of the reinforcing layer, the annular buffer and shock-absorbing layer is composed of a honeycomb structure made of rubber. Each hexagonal cavity is filled with highly elastic sponge. The honeycomb structure absorbs vibration energy through rubber deformation and sponge elasticity, which can buffer external impacts and improve the service life of the hose.

[0015] By providing spiral guide protrusions on the inner wall of the inner tube, and extending spirally along the axial direction, impurities are thrown towards the tube wall by centrifugal force through the principle of fluid dynamics, which facilitates the temporary storage of impurities and achieves a certain dust removal effect. Furthermore, by rotating the flexible hose, the impurities temporarily stored in the spiral guide protrusions can be quickly discharged along the spiral path. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the spiral flow guiding protrusion in this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the pressure spring in this utility model.

[0020] The diagram is marked as follows:

[0021] 2. Inner tube; 3. Armor layer; 4. Reinforcing layer; 5. Joint; 6. Connecting flange; 7. Pressure spring; 8. Flame-retardant braided layer; 9. Buffer and shock-absorbing layer; 10. Spiral guide protrusion; 12. Antistatic layer; 13. Wear-resistant protective layer; 14. Waterproof and breathable layer; 15. UV-resistant layer. Detailed Implementation

[0022] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0025] To address the problems existing in the background art, this application proposes the following technical solution:

[0026] A high-strength armored metal-coated flexible tube includes: an inner tube 2, an armor layer 3, and a reinforcing layer 4, wherein the armor layer 3 is disposed on the outside of the inner tube 2, and the reinforcing layer 4 is disposed on the outside of the armor layer 3.

[0027] A buffer and shock-absorbing layer 9 is provided on the outside of the reinforcing layer 4. The buffer and shock-absorbing layer 9 is made of a honeycomb structure of rubber material. Each hexagonal cavity of the honeycomb structure is filled with highly elastic sponge. The inner wall of the inner tube 2 is provided with a spiral guide protrusion 10. The spiral guide protrusion 10 extends spirally along the axial direction of the inner tube 2. The cross section of the spiral guide protrusion 10 is semi-circular.

[0028] An annular buffer and shock-absorbing layer 9 is set on the outside of the reinforcing layer 4. The annular buffer and shock-absorbing layer 9 is composed of a honeycomb structure made of rubber. Each hexagonal cavity is filled with highly elastic sponge. The honeycomb structure absorbs vibration energy through rubber deformation and sponge elasticity, which can buffer external impacts and improve the service life of the hose. A spiral guide protrusion 10 is provided on the inner wall of the inner tube 2. The spiral guide protrusion 10 extends spirally along the axial direction. Through the principle of fluid dynamics, impurities are thrown towards the tube wall by centrifugal force, which facilitates the temporary storage of impurities and plays a certain role in dust removal. Furthermore, by rotating the hose, the impurities temporarily stored in the spiral guide protrusion 10 can be quickly discharged along the spiral path.

[0029] Furthermore, the armor layer 3 is a tubular dense stainless steel wire mesh composite layer. A pressure spring 7 is provided between the inner tube 2 and the armor layer 3. The pressure spring 7 is arranged around the outer wall of the inner tube 2. A spiral groove adapted to the pressure spring 7 is provided on the outer wall of the inner tube 2. The pressure spring 7 is embedded in the spiral groove. The reinforcing layer 4 is a PVC hose. A flame-retardant braided layer 8 is provided between the armor layer 3 and the reinforcing layer 4. The flame-retardant braided layer 8 is an aramid flame-retardant fiber braided layer. Connectors 5 are symmetrically provided at both ends of the tube body 1. Connecting flanges 6 are provided on the connectors 5.

[0030] Furthermore, an antistatic layer 12 is provided on the buffer and shock absorption layer 9. The antistatic layer 12 is a thermoplastic elastomer layer with a permanent antistatic agent added. By providing the antistatic layer 12, the risk of spark discharge caused by static electricity is avoided, making the high-strength armored metal-coated hose suitable for flammable and explosive environments.

[0031] Furthermore, an abrasion-resistant protective layer 13 is provided on the outer side of the antistatic layer 12. This layer 13 is woven from ultra-high molecular weight polyethylene (UHMWPE), which possesses extremely high abrasion resistance—several times that of carbon steel and stainless steel—effectively resisting scratches and wear from sharp objects. Simultaneously, this material also exhibits good corrosion resistance, resisting the erosion of various chemicals. The abrasion-resistant protective layer 13, through a special weaving process, forms a tight mesh structure that adheres closely to the cushioning and shock-absorbing layer 9, providing additional protection for the hose without compromising its flexibility.

[0032] Furthermore, a waterproof and breathable layer 14 is provided on the outside of the wear-resistant protective layer 13. The waterproof and breathable layer 14 is a polytetrafluoroethylene (PTFE) microporous membrane layer. Because the waterproof and breathable layer 14 is made of PTFE microporous membrane material, this material has a unique microporous structure. The pore size is smaller than the diameter of a water droplet but larger than the diameter of a water vapor molecule. It can effectively prevent external moisture from entering the hose, while allowing water vapor inside the hose to escape, avoiding corrosion and mildew problems caused by internal moisture accumulation. The waterproof and breathable layer 14 is composited with the wear-resistant protective layer 13 through a hot-pressing process to form a continuous and uniform protective membrane, ensuring the stability of waterproof and breathable performance.

[0033] Furthermore, an ultraviolet (UV) shielding layer 15 is provided on the outer side of the waterproof and breathable layer 14. This UV shielding layer 15 is a polyurethane coating with added UV absorbers. Because the UV shielding layer 15 is composed of a polyurethane coating with added UV absorbers, these absorbers can absorb ultraviolet rays with wavelengths between 290 and 400 nm, converting them into harmless heat energy, thus effectively preventing UV damage to the hose material. The polyurethane coating has good flexibility and adhesion, allowing it to tightly cover the surface of the waterproof and breathable layer 14, forming a uniform protective layer. Even with frequent bending of the hose, the coating is not prone to peeling, providing long-term protection against UV aging.

[0034] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A high strength, armored, metal-clad flexible hose characterized by, include: Inner tube (2), armor layer (3), and reinforcing layer (4), wherein the armor layer (3) is disposed on the outside of the inner tube (2) and the reinforcing layer (4) is disposed on the outside of the armor layer (3); The outer side of the reinforcing layer (4) is provided with a buffer and shock-absorbing layer (9), which is made of a honeycomb structure of rubber material. Each hexagonal cavity of the honeycomb structure is filled with a highly elastic sponge. The inner wall of the inner tube (2) is provided with a spiral flow guiding protrusion (10), which extends spirally along the axial direction of the inner tube (2). The cross section of the spiral flow guiding protrusion (10) is semi-circular.

2. A high strength, armored, metal-clad flexible pipe as defined in claim 1, wherein, The armor layer (3) is a tubular dense stainless steel wire mesh composite layer. A pressure spring (7) is provided between the inner tube (2) and the armor layer (3). The pressure spring (7) is arranged around the outer wall of the inner tube (2). A spiral groove adapted to the pressure spring (7) is provided on the outer wall of the inner tube (2). The pressure spring (7) is embedded in the spiral groove. The reinforcing layer (4) is a PVC hose. A flame-retardant braided layer (8) is provided between the armor layer (3) and the reinforcing layer (4). The flame-retardant braided layer (8) is an aramid flame-retardant fiber braided layer. A connector (5) is symmetrically provided at both ends of the tube body (1). A connecting flange (6) is provided on the connector (5).

3. The high-strength armored metal-coated flexible hose according to claim 1, characterized in that, An antistatic layer (12) is provided on the buffer and shock-absorbing layer (9), and the antistatic layer (12) is a thermoplastic elastomer layer with a permanent antistatic agent added.

4. A high-strength armored metal-coated flexible hose according to claim 3, characterized in that, The antistatic layer (12) is provided with a wear-resistant protective layer (13) on the outside, which is made of ultra-high molecular weight polyethylene.

5. A high-strength armored metal-coated flexible hose according to claim 4, characterized in that, The wear-resistant protective layer (13) is provided with a waterproof and breathable layer (14) on the outside, and the waterproof and breathable layer (14) is a polytetrafluoroethylene microporous membrane layer.

6. A high-strength armored metal-coated flexible hose according to claim 5, characterized in that, The waterproof and breathable layer (14) is provided with an ultraviolet protection layer (15) on the outside, which is a polyurethane coating with added ultraviolet absorbers.

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