Heat-resistant and heat-insulated high-pressure rubber hose assembly

Abstract

The utility model provides a kind of heat-resistant heat-insulating high-pressure rubber tube assembly, it is related to high-pressure rubber tube assembly technical field, including first locking nut, the right end of first locking nut is equipped with first joint body, by setting metal corrugated heat sink, ceramic fiber insulation layer and first reinforcing layer, by metal corrugated heat sink adopts stainless steel material, high temperature resistance and stable structure, continuous corrugated design substantially increases heat dissipation area, can quickly dissipate internal heat, cooperate ceramic fiber insulation layer to form "active heat dissipation and passive heat insulation" double system, both can block internal and external heat transfer, protect other component performance, reduce medium heat loss, can also adapt to high temperature working condition and chemical property is stable, first reinforcing layer is woven by aramid fiber and stainless steel wire, and the advantages of both complement each other, significantly improve the ability of rubber pipe tensile, extrusion resistance, wear resistance, resist internal pressure and prevent deformation rupture, simultaneously rely on wear resistance and corrosion resistance characteristics to extend the service life of rubber pipe.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure hose assembly technology, and in particular to a heat-resistant and heat-insulating high-pressure hose assembly. Background Technology

[0002] In many fields such as industrial production and energy transmission, high-pressure hoses are frequently used to transport various fluid media. Traditional high-pressure hoses typically consist of an inner rubber layer, a reinforcing layer, and an outer rubber layer. For example, the inner rubber layer of common high-pressure hoses is generally made of natural rubber or nitrile rubber, mainly for sealing and resisting a certain degree of chemical corrosion. The reinforcing layer is often a single fiber braided structure, such as a polyester fiber braided layer, to provide a certain compressive strength. The outer rubber layer mainly serves to protect the internal structure and prevent wear. These traditional high-pressure hose structures have significant shortcomings when facing high-temperature environments. Due to the lack of effective heat dissipation and insulation measures, heat easily accumulates inside the hose, which not only accelerates the aging of the hose material and reduces its service life, but also affects the performance of the transported medium and may even cause safety hazards. At the same time, under high pressure and complex working conditions, the tensile, compressive, and abrasion resistance of traditional hoses is also limited, making it difficult to meet the needs of some special industrial scenarios.

[0003] A search revealed that the document with publication number "CN221665466U" mentions "this utility model discloses a high-pressure hose assembly, including a steel wire tube, with an outer ring installed on the outer side of the steel wire tube." In use, an outer rod is installed, and the operator moves the outer rod to a suitable position on the outside of the steel wire tube. Two fixing parts are used to fix the base plate to a suitable position on the equipment. The operator tightens the fastening bolt, allowing it to move under the threaded support of the semi-circular block. The operator rotates the outer rod, causing it to move the outer ring to a suitable angle via the inner rod. The fastening bolt is then tightened to fix the rotating block. The operator tightens the fixing bolt, allowing it to move under the threaded support of the outer rod, so that the fixing bolt can move out of the inner side of a circular hole and no longer fix the inner rod. The operator moves the inner rod out of the inner side of the outer rod to a suitable length, allowing the inner rod to move the outer ring to support the steel wire tube under external force to a suitable state. The operator then tightens the fixing bolt into the inner side of the circular hole at the appropriate position to fix the inner rod.

[0004] However, traditional high-pressure hoses lack dedicated heat dissipation and insulation designs. In high-temperature environments, heat cannot be dissipated in time, which can easily lead to localized overheating of the hose, accelerate material deterioration, and affect the overall performance and lifespan of the hose. Moreover, heat can easily transfer between the inside and outside, failing to effectively protect the internal medium and external components. At the same time, the single reinforcing layer structure is weak in tensile, extrusion, and wear resistance when dealing with complex working conditions such as high pressure and high impact, making it prone to deformation, cracking, and other problems, and failing to guarantee the reliability of the hose under harsh working conditions.

[0005] Therefore, we provide a heat-resistant and heat-insulating high-pressure hose assembly to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a heat-resistant and heat-insulating high-pressure hose assembly, aiming to solve the problems mentioned above.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A heat-resistant and heat-insulating high-pressure hose assembly includes a first locking nut, a first connector body installed at the right end of the first locking nut, a first sealing sleeve installed at the right end of the first connector body, an expanded graphite sealing ring installed inside the first sealing sleeve, an outer protective layer installed inside the expanded graphite sealing ring, a heat-resistant and heat-insulating component installed inside the outer protective layer, the heat-resistant and heat-insulating component including a metal corrugated heat dissipation sleeve installed inside the outer protective layer, and a ceramic fiber heat insulation layer disposed inside the metal corrugated heat dissipation sleeve.

[0008] As a further description of the above technical solution: The inner wall of the first sealing sleeve is provided with an annular groove, and an expanded graphite sealing ring is embedded in the annular groove. Multiple sets of the expanded graphite sealing ring are provided. The first locking nut and the first connector body are connected by threads.

[0009] As a further description of the above technical solution: The outer protective layer is a cylindrical tubular structure and is fitted over the outside of the metal corrugated heat dissipation sleeve. The material of the outer protective layer is polytetrafluoroethylene.

[0010] As a further description of the above technical solution: The corrugated metal heat sink is made of stainless steel and has a continuous corrugated structure. The ceramic fiber insulation layer is made of polycrystalline mullite fiber.

[0011] As a further description of the above technical solution: The inner side of the ceramic fiber insulation layer is equipped with a first reinforcing layer, and the inner side of the first reinforcing layer is equipped with a heat-resistant buffer layer. The first reinforcing layer is made of a mixture of aramid fiber and stainless steel wire, and the heat-resistant buffer layer is made of high-temperature resistant elastic ceramic cotton material.

[0012] As a further description of the above technical solution: A second reinforcing layer is installed on the inner side of the heat-resistant buffer layer. The second reinforcing layer is woven from nickel-plated steel wire. An inner rubber layer is provided on the inner side of the second reinforcing layer. The inner rubber layer is made of modified fluororubber material.

[0013] As a further description of the above technical solution: A second sealing sleeve is installed on the right end of the outer protective layer. A second connector body is fixedly connected to the right end of the second sealing sleeve. A second locking nut is installed on the right end of the second connector body. Expanded graphite sealing rings are provided on the inner sides of both the second sealing sleeve and the first sealing sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are: By incorporating a corrugated metal heat sink, a ceramic fiber insulation layer, and a first reinforcement layer, the corrugated metal heat sink, made of stainless steel, is heat-resistant and structurally stable. Its continuous corrugated design significantly increases the heat dissipation area, allowing for rapid dissipation of internal heat. Combined with the ceramic fiber insulation layer, it forms a dual system of "active heat dissipation and passive insulation," which not only blocks the transfer of heat between the inside and outside, protecting the performance of other components and reducing heat loss of the medium, but also adapts to high-temperature operating conditions and has stable chemical properties. The first reinforcement layer is woven from a mixture of aramid fiber and stainless steel wire, with the two complementing each other's advantages to significantly improve the hose's tensile, compressive, and abrasion resistance, resist internal pressure to prevent deformation and breakage, and extend the hose's service life due to its wear-resistant and corrosion-resistant properties.

[0015] By incorporating a heat-resistant buffer layer, a second reinforcing layer, and an inner rubber layer, the reliability of the hose is enhanced from the dimensions of buffer protection, structural reinforcement, and media adaptability. The heat-resistant buffer layer uses high-temperature resistant elastic ceramic cotton, which remains stable at high temperatures. Through elastic deformation, it absorbs external impacts, vibrations, and internal pressure fluctuations, providing continuous buffer protection for the internal structure and reducing the risk of failure. The second reinforcing layer is woven with nickel-plated steel wire, which combines high strength and corrosion resistance. It can resist the internal pressure generated by high-pressure media to prevent hose rupture. Together with the first reinforcing layer, it forms a dual reinforcement system, further enhancing the overall structural strength of the hose. The inner rubber layer uses modified fluororubber, which has excellent resistance to oil, solvents, high and low temperatures, and chemical corrosion. It directly resists the erosion of the inner wall by the conveying medium. At the same time, the smooth inner wall reduces the flow resistance of the medium, ensuring conveying efficiency and reliability, and is suitable for various complex media conveying scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model; Figure 3 This is a schematic diagram showing the disassembled structure of the outer protective layer and the heat-resistant insulation component of this utility model; Figure 4 This is a cross-sectional structural diagram of the first sealing sleeve and the expanded graphite sealing ring of this utility model.

[0017] The following are the labeling elements in the diagram: 1. First locking nut; 2. First connector body; 3. First sealing sleeve; 4. Expanded graphite sealing ring; 5. Outer protective layer; 6. Heat-resistant insulation component; 601. Metal corrugated heat dissipation sleeve; 602. Ceramic fiber insulation layer; 603. First reinforcing layer; 604. Heat-resistant buffer layer; 605. Second reinforcing layer; 606. Inner rubber layer; 7. Second sealing sleeve; 8. Second connector body; 9. Second locking nut. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4 As shown, this utility model provides a technical solution: a heat-resistant and heat-insulating high-pressure hose assembly, including a first locking nut 1, a first connector body 2 installed at the right end of the first locking nut 1, a first sealing sleeve 3 installed at the right end of the first connector body 2, an expanded graphite sealing ring 4 installed inside the first sealing sleeve 3, an outer protective layer 5 installed inside the expanded graphite sealing ring 4, a heat-resistant and heat-insulating component 6 installed inside the outer protective layer 5, the heat-resistant and heat-insulating component 6 including a metal corrugated heat dissipation sleeve 601 installed inside the outer protective layer 5, and a ceramic fiber heat insulation layer 602 provided inside the metal corrugated heat dissipation sleeve 601.

[0020] Furthermore, the inner wall of the first sealing sleeve 3 is provided with an annular groove, and an expanded graphite sealing ring 4 is embedded in the annular groove. Multiple sets of expanded graphite sealing rings 4 are provided. The first locking nut 1 and the first connector body 2 are connected by threads. The annular groove on the inner wall of the first sealing sleeve 3 is a precise installation and positioning structure for the expanded graphite sealing ring 4. Multiple sets of expanded graphite sealing rings 4 are embedded therein. The expanded graphite material has good sealing and expansion characteristics. When subjected to pressure, the sealing ring will expand, thereby filling the gap between the sealing surfaces, greatly improving the sealing effect, and effectively preventing high-pressure media from leaking from the sealing part.

[0021] Furthermore, the outer protective layer 5 is a cylindrical tubular structure, and it is fitted over the outside of the metal corrugated heat sink 601. The outer protective layer 5 is made of polytetrafluoroethylene (PTFE). The cylindrical tubular structure of the outer protective layer 5 can completely wrap around the inner metal corrugated heat sink 601, achieving all-round protection. PTFE has excellent corrosion resistance, high and low temperature resistance, and wear resistance. On the one hand, it can resist the erosion of the metal corrugated heat sink 601 by corrosive media in the external environment; on the other hand, it can withstand a certain range of high and low temperature changes, avoiding damage to internal components caused by sudden temperature changes. At the same time, it can also reduce the wear of the metal corrugated heat sink 601 by external friction, extending its service life.

[0022] Furthermore, the metal corrugated heat dissipation sleeve 601 is made of stainless steel and has a continuous corrugated structure. The ceramic fiber insulation layer 602 is made of polycrystalline mullite fiber. The use of stainless steel in the metal corrugated heat dissipation sleeve 601 enhances its high-temperature resistance and thermal conductivity, enabling it to maintain structural stability in high-temperature environments. Simultaneously, its continuous corrugated structure increases the heat dissipation area, allowing heat transferred from inside the hose to be quickly dissipated to the external environment through the corrugated surface, thus achieving efficient heat dissipation and reducing the internal temperature of the hose. The polycrystalline mullite fiber used in the ceramic fiber insulation layer 602 has an extremely low thermal conductivity, effectively preventing heat transfer. When heat attempts to pass through the hose from the outside or inside, the ceramic fiber insulation layer 602 blocks the heat, reducing the amount of heat transferred. The heat dissipation function of the metal corrugated heat dissipation sleeve 601 and the insulation function of the ceramic fiber insulation layer 602 work together to achieve the efficient heat resistance and insulation function of the heat-resistant insulation component 6.

[0023] Furthermore, a first reinforcing layer 603 is installed on the inner side of the ceramic fiber insulation layer 602, and a heat-resistant buffer layer 604 is installed on the inner side of the first reinforcing layer 603. The first reinforcing layer 603 is made of a mixture of aramid fiber and stainless steel wire, while the heat-resistant buffer layer 604 is made of high-temperature resistant elastic ceramic cotton material. The first reinforcing layer 603 adopts a structure of mixed aramid fiber and stainless steel wire. Aramid fiber has excellent properties such as high strength, high modulus, and wear resistance, while stainless steel wire has excellent strength and corrosion resistance. After the two are mixed and woven, the overall strength and structural stability of the first reinforcing layer 603 can be significantly improved, thereby increasing... The heat-resistant buffer layer 604, made of high-temperature resistant elastic ceramic cotton material, enhances the tensile, compressive, and abrasion resistance of the entire hose assembly, preventing deformation or damage under high-pressure working conditions. It not only withstands high temperatures without losing performance but also possesses excellent elasticity and buffering properties. When the hose is subjected to external impacts, vibrations, or internal pressure fluctuations, the heat-resistant buffer layer 604 absorbs and buffers these external forces through its own elastic deformation, reducing the impact of external forces on the hose. Simultaneously, its high-temperature resistance ensures a stable buffering effect under high-temperature working conditions, providing effective buffer protection for the stable operation of the hose.

[0024] Furthermore, a second reinforcing layer 605 is installed inside the heat-resistant buffer layer 604. The second reinforcing layer 605 is woven from nickel-plated steel wire. An inner rubber layer 606 is provided inside the second reinforcing layer 605. The inner rubber layer 606 is made of modified fluororubber material. The nickel-plated steel wire has high strength and good corrosion resistance, which can further enhance the structural strength of the hose and prevent the hose from rupturing due to excessive internal pressure when conveying high-pressure media. The inner rubber layer 606 is made of modified fluororubber material. Modified fluororubber has excellent oil resistance, solvent resistance, high and low temperature resistance and chemical corrosion resistance. As the inner layer of the hose, it is in direct contact with the conveyed medium and can effectively resist the erosion of the inner wall of the hose by various corrosive media, preventing the medium from damaging the hose.

[0025] Furthermore, a second sealing sleeve 7 is installed on the right end of the outer protective layer 5. A second connector body 8 is fixedly connected to the right end of the second sealing sleeve 7. A second locking nut 9 is installed on the right end of the second connector body 8. Expanded graphite sealing rings 4 are provided on the inner sides of both the second sealing sleeve 7 and the first sealing sleeve 3. The second sealing sleeve 7 installed on the right end of the outer protective layer 5 corresponds to the first sealing sleeve 3 on the left end, and together they provide an installation carrier for sealing both ends of the hose assembly. The second connector body 8 fixedly connected to the right end of the second sealing sleeve 7 cooperates with the first connector body 2 on the left end to form the connection interface at both ends of the hose assembly, which is used to connect with external equipment. The second locking nut 9 installed on the right end of the second connector body 8 has a similar function to the first locking nut 1 on the left end. Through threaded connection or other means, the second connector body 8 is firmly connected to the external equipment, realizing the reliable fixation of the right end of the hose assembly.

[0026] Working principle: In use, firstly, the first connector body 2 is fixed to the external equipment by threaded connection with the first locking nut 1. Multiple sets of expanded graphite sealing rings 4 in the annular groove on the inner wall of the first sealing sleeve 3 initially expand under pressure, filling the gaps and completing the sealing and fixing of the left end. In the same way, the second connector body 8 is fixed by the second locking nut 9. The expanded graphite sealing rings 4 in the second sealing sleeve 7 expand synchronously to achieve sealing and fixing of the right end, thus connecting the hose assembly to the external equipment to form a closed medium transport channel. After connection, the outer protective layer 5 provides all-round protection for the inner metal corrugated heat dissipation sleeve 601. The ceramic fiber heat insulation layer 602 in the heat-resistant insulation component 6 initiates heat insulation preparation. The first reinforcing layer 603 and the second reinforcing layer 605 provide structural support. The heat-resistant buffer layer 604 is ready. The inner rubber... Layer 606 keeps its inner wall smooth and awaits media contact. When high-pressure, high-temperature media enters the inner rubber layer 606, the inner rubber layer 606 resists media erosion. The first reinforcing layer 603 and the second reinforcing layer 605 resist internal pressure to prevent hose rupture. The ceramic fiber insulation layer 602 blocks heat transfer. The metal corrugated heat dissipation sleeve 601 dissipates heat quickly through its corrugated structure. The two work together to achieve efficient heat resistance and insulation. The heat-resistant buffer layer 604 absorbs external impacts, vibrations, and internal pressure fluctuations through elastic deformation. The expanded graphite sealing rings 4 at both ends further expand under media pressure to strengthen the seal. After the media delivery is completed, the internal pressure of the hose assembly decreases, the expanded graphite sealing rings 4 contract, and each component gradually returns to its initial stable state, waiting for the next delivery task. This completes the usage process of a heat-resistant and heat-insulating high-pressure hose assembly.

[0027] 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 heat-resistant and heat-insulating high-pressure hose assembly, comprising a first locking nut (1), characterized in that: The first locking nut (1) is equipped with a first connector body (2) at the right end, and a first sealing sleeve (3) is installed at the right end of the first connector body (2). An expanded graphite sealing ring (4) is installed on the inner side of the first sealing sleeve (3). An outer protective layer (5) is installed on the inner side of the expanded graphite sealing ring (4). A heat-resistant insulation component (6) is installed on the inner side of the outer protective layer (5). The heat-resistant insulation component (6) includes a metal corrugated heat dissipation sleeve (601) installed on the inner side of the outer protective layer (5). A ceramic fiber heat insulation layer (602) is provided on the inner side of the metal corrugated heat dissipation sleeve (601).

2. The heat-resistant and heat-insulating high-pressure hose assembly according to claim 1, characterized in that, The inner wall of the first sealing sleeve (3) is provided with an annular groove, and an expanded graphite sealing ring (4) is embedded in the annular groove. Multiple sets of the expanded graphite sealing ring (4) are provided. The first locking nut (1) and the first connector body (2) are connected by threads.

3. The heat-resistant and heat-insulating high-pressure hose assembly according to claim 1, characterized in that, The outer protective layer (5) is a cylindrical tubular structure and is fitted on the outside of the metal corrugated heat dissipation sleeve (601). The material of the outer protective layer (5) is polytetrafluoroethylene.

4. The heat-resistant and heat-insulating high-pressure hose assembly according to claim 1, characterized in that, The metal corrugated heat sink (601) is made of stainless steel and has a continuous corrugated structure. The ceramic fiber heat insulation layer (602) is made of polycrystalline mullite fiber.

5. The heat-resistant and heat-insulating high-pressure hose assembly according to claim 1, characterized in that, The ceramic fiber insulation layer (602) has a first reinforcing layer (603) installed on its inner side, and a heat-resistant buffer layer (604) is installed on its inner side. The first reinforcing layer (603) is made of a mixture of aramid fiber and stainless steel wire, and the heat-resistant buffer layer (604) is made of high-temperature resistant elastic ceramic cotton material.

6. The heat-resistant and heat-insulating high-pressure hose assembly according to claim 5, characterized in that, The heat-resistant buffer layer (604) has a second reinforcing layer (605) installed on its inner side. The second reinforcing layer (605) is woven from nickel-plated steel wire. The inner side of the second reinforcing layer (605) is provided with an inner rubber layer (606), which is made of modified fluororubber material.

7. The heat-resistant and heat-insulating high-pressure hose assembly according to claim 1, characterized in that, The outer protective layer (5) is equipped with a second sealing sleeve (7) at the right end. The second sealing sleeve (7) is fixedly connected to a second connector body (8). The second connector body (8) is equipped with a second locking nut (9) at the right end. Expanded graphite sealing rings (4) are provided on the inner sides of both the second sealing sleeve (7) and the first sealing sleeve (3).

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