Fire-resistant hydraulic rubber hose
The fire-resistant hydraulic rubber hose, with its multi-layer structure and variable diameter design, solves the problems of pressure loss and fluctuation caused by turbulence when the fluid enters, thus achieving stable fluid transmission and efficient system operation.
Patent Information
- Application Number
- CN202520779662.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-23
AI Technical Summary
Existing fire-resistant hydraulic rubber hoses are prone to turbulence when fluid enters, resulting in large pressure loss, violent system pressure fluctuations, and unstable fluid transmission.
It adopts a multi-layer structure design, with the inner tube layer made of nitrile rubber, the outer tube layer made of neoprene rubber, and the connecting layer made of ethylene propylene rubber. The outer surfaces of the inner tube layer and the connecting layer have a corrugated structure. The inner tube layer has a stepped diameter-changing section and staggered hemispherical protrusions. Combined with the metal wire mesh and ceramic fiber insulation layer, the fluid transmission path is optimized.
It effectively reduces turbulence and pressure loss, promotes uniform fluid mixing, improves the working efficiency of hydraulic systems, reduces energy consumption, and ensures system stability and reliability.
Smart Images
Figure CN223881896U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic rubber hose technical field more specifically, relate to a kind of fire-resistant hydraulic rubber hose. BACKGROUND
[0002] Fire-resistant hydraulic rubber hose, specially designed for high temperature, flammable and other harsh conditions, so that it can effectively block heat conduction in high temperature environment, avoid internal hydraulic oil affected by high temperature, still can guarantee 15 minutes normal working pressure at 750 ℃ high temperature. Widely used in oil exploration drilling blowout preventer hydraulic control, metallurgical steelmaking high temperature zone hydraulic transmission and other fields, build a defense line for system safety and stability operation.
[0003] At present, fire-resistant hydraulic rubber hose mostly adopts single pipe diameter and smooth gradual change design, fluid enters when flow velocity changes suddenly easy to produce turbulent flow, lead to pressure loss is big, not convenient to buffer the impact caused by flow velocity variation, cause system pressure fluctuation is violent, there is deficiency in fluid transmission stability. In view of this, we propose a kind of fire-resistant hydraulic rubber hose. UTILITY MODEL CONTENTS
[0004] The utility model aims at overcoming the insufficient of prior art, adapting to reality needs, provide a kind of fire-resistant hydraulic rubber hose to solve the technical problem that current fluid enters when flow velocity changes suddenly easy to produce turbulent flow, lead to pressure loss is big, not convenient to buffer the impact caused by flow velocity variation, cause system pressure fluctuation is violent.
[0005] To solve the above technical problems, the utility model provides the following technical scheme: a kind of fire-resistant hydraulic rubber hose, including hydraulic rubber hose body and the installation mechanism being arranged at the both ends of hydraulic rubber hose body, the through-flow opening is arranged in the hydraulic rubber hose body, the hydraulic rubber hose body includes inner tube layer, connecting layer, reinforcing layer, heat insulation layer and outer tube layer, the connecting layer is fixed in the outer layer of inner tube layer by adhesive, the reinforcing layer is fixed in the outer layer of connecting layer by adhesive, the outer tube layer is wrapped in the outer layer of heat insulation layer by heat shrinkage, the installation mechanism includes the flange plate being symmetrically arranged at the both ends of hydraulic rubber hose body, the connecting hole is arrayed on the flange plate, the annular groove is set on the front end of flange plate outside through-flow opening.
[0006] Preferably, the inner tube layer is made of nitrile rubber material, the outer tube layer is made of chloroprene rubber material, and the outer surfaces of the inner tube layer and the outer tube layer are corrugated.
[0007] Preferably, the connecting layer is made of ethylene-propylene rubber material, the inner wall of the connecting layer is provided with a corrugated structure, and the corrugations of the inner wall of the connecting layer are butt-jointed between the corrugations of the outer surface of the inner tube layer.
[0008] Preferably, the reinforcing layer is made of metal wire mesh, the heat insulation layer is made of ceramic fiber material, and the heat insulation layer is fixed to the outer layer of the reinforcing layer by an adhesive.
[0009] Preferably, the inner tube layer comprises a plurality of first variable-diameter portions and a plurality of second variable-diameter portions, the first variable-diameter portions and the second variable-diameter portions are arranged in abutment, the inner diameter of the first variable-diameter portions gradually increases from small to large along the long axis direction, and the inner diameter of the second variable-diameter portions gradually decreases from large to small along the long axis direction.
[0010] Preferably, the first variable-diameter portions and the second variable-diameter portions are both composed of a plurality of steps, the plurality of steps form a stepped variable-diameter structure of the first variable-diameter portions and the second variable-diameter portions, a plurality of protrusions are arranged on each of the plurality of steps, the protrusions are arranged in a semispherical shape, and the protrusions of the inner tube layer are arranged in a staggered manner along the long axis direction.
[0011] Compared with the prior art, the utility model has the beneficial effects that:
[0012] 1、The utility model discloses an inner tube layer structure is designed, and the inner tube layer adopts nitrile rubber material and is made, has good oil resistance, water resistance and certain heat resistance, can bear the long -term corrosion of hydraulic oil, effectively avoids the corrosion of hydraulic oil to the inner tube layer, ensures that hydraulic oil is stably transmitted in the hose, prevents the leakage, and the corrugated structure of the outer surface and the corrugation of the inner wall of the connecting layer interfit, make the inner tube layer and the connecting layer firm combination, improve the overall structural stability of the hose, and the inner wall combines the variable -diameter portion and the protrusion design, can reduce fluid flow resistance, optimize the fluid transmission path, reduce turbulence and pressure loss, promote the uniform mixing of hydraulic oil composition, improve the working efficiency of the hydraulic system, solve the problem that the current fluid enters when the flow rate changes suddenly and easily produces turbulence, leads to big pressure loss, and the impact of the change of flow rate is inconveniently buffered, and the system pressure fluctuation is violent.
[0013] 2、The utility model discloses a first variable -diameter portion and second variable -diameter portion structure are also designed, and the stepped variable -diameter structure of the first variable -diameter portion and second variable -diameter portion is formed, and the semispherical protrusion of staggered distribution on the step is cooperated, effectively improve the flow state of fluid in the hose, when fluid enters, the variable -diameter portion can avoid the flow rate changes suddenly, reduce turbulence and pressure loss, and the vortex produced by the protrusion can promote the uniform mixing of hydraulic oil composition, optimize the flow rate distribution, make the fluid transmission more stable, improve the working efficiency of the hydraulic system, reduce energy loss, avoid the problem that the current fluid enters when the flow rate changes suddenly and easily produces turbulence, leads to big pressure loss, and the impact of the change of flow rate is inconveniently buffered, and the system pressure fluctuation is violent. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a front view structural schematic diagram of the utility model;
[0015] Figure 2The sectional view structure schematic diagram of the utility model;
[0016] Figure 3 The inner tube layer structure schematic diagram of the utility model;
[0017] Figure 4 The local inner tube layer structure schematic diagram of the utility model;
[0018] Figure 5 The hydraulic rubber hose body cross section distribution structure schematic diagram of the utility model.
[0019] Mark explanation in the drawing: 100, hydraulic rubber hose body;101, flow-through port;102, inner tube layer;1021, first reducing portion;1022, second reducing portion;1023, step;1024, protrusion;103, connecting layer;104, reinforcing layer;105, heat insulation layer;106, outer tube layer;200, mounting mechanism;201, flange;202, annular groove;203, connecting hole. Specific implementation
[0020] As Figures 1 to 5 shown, the utility model relates to a kind of fire-resistant hydraulic rubber hoses, including hydraulic rubber hose body 100 and the mounting mechanism 200 being arranged at the both ends of hydraulic rubber hose body 100, flow-through port 101 is arranged in hydraulic rubber hose body 100, and hydraulic rubber hose body 100 includes inner tube layer 102, connecting layer 103, reinforcing layer 104, heat insulation layer 105 and outer tube layer 106, connecting layer 103 is fixed in the outer layer of inner tube layer 102 by adhesive, reinforcing layer 104 is fixed in the outer layer of connecting layer 103 by adhesive, outer tube layer 106 is wrapped in the outer layer of heat insulation layer 105 by heat shrinkage, and mounting mechanism 200 includes the flange 201 being symmetrically arranged at the both ends of hydraulic rubber hose body 100, and connecting hole 203 is arrayed and opened on flange 201, and annular groove 202 is opened on the front end of flange 201 outside flow-through port 101.The utility model combines reducing and protrusion 1024 design, optimizes fluid transmission, reduces pressure loss and fluctuation, and multi-layer structure cooperates, and is connected closely, high in strength, and wire mesh and heat insulation layer 105 have fireproof heat insulation, outer tube flame-retardant anti-aging, effectively improve the strength and performance of fire-resistant hydraulic rubber hose.
[0021] Specifically, the inner tube layer 102 is made of nitrile rubber material, the outer tube layer 106 is made of chloroprene rubber material, and the outer surfaces of the inner tube layer 102 and the outer tube layer 106 are both corrugated. Nitrile rubber has good oil resistance, water resistance and certain heat resistance, can withstand the erosion of hydraulic oil, and has good flexibility and sealing performance, which can ensure the stable transmission of hydraulic oil in the hose and prevent leakage. Chloroprene rubber has good ozone resistance, aging resistance and flame retardant performance, can resist the erosion of external environmental factors, and can slow down the burning speed when encountering flames, thus playing a certain fireproof role. The corrugated design of the outer tube layer 106 makes the hose more flexible when bending, which can adapt to different installation spaces and working environments. The corrugated structure can disperse the bending stress and reduce the local stress concentration of the outer tube layer 106 during bending, thereby avoiding the rupture of the outer tube layer 106 due to excessive bending and improving the flexibility and operability of the hose. The corrugated structure of the inner tube layer 102 has the same principle.
[0022] Further, the connecting layer 103 is made of ethylene-propylene rubber material, the inner wall of the connecting layer 103 is provided with a corrugated structure, and the corrugated structure of the inner wall of the connecting layer 103 is butted between the corrugated structures on the outer surface of the inner tube layer 102. Ethylene-propylene rubber has excellent weather resistance, water resistance and electrical insulation performance, and its flame retardant performance is also good, which can adapt to various harsh working environments and protect the internal structure of the hose from external factors. The corrugated structure on the outer surface of the inner tube layer 102 is embedded in the corrugated groove in the inner wall of the connecting layer 103. This design increases the contact area and friction between the inner tube layer 102 and the connecting layer 103, making the connection between the two layers more firm and improving the overall structural stability of the hose.
[0023] It is worth noting that the reinforcing layer 104 is made of metal mesh, and the heat insulation layer 105 is made of ceramic fiber material and is fixed to the outer layer of the reinforcing layer 104 by an adhesive. The metal mesh can provide additional mechanical protection to prevent the hose from being pierced or cut by external objects, thereby improving the durability of the hose. For fire-resistant hoses, the metal mesh also has a certain fireproof effect. When encountering flames, the metal mesh slows down the burning speed of the rubber hose, and the metal mesh itself has good thermal conductivity, which can quickly conduct heat away, helping to reduce the surface temperature of the hose. The heat insulation layer 105 can effectively prevent external heat from entering the hose, reducing the impact of high temperature on the hydraulic oil and the rubber hose, and reducing the possibility of the hydraulic oil deteriorating due to high temperature. At the same time, it can also protect the performance of the rubber hose and prolong its service life.
[0024] It is worth introducing that the inner tube layer 102 is composed of a plurality of first variable diameter portions 1021 and a plurality of second variable diameter portions 1022, the first variable diameter portions 1021 and the second variable diameter portions 1022 are arranged in opposition, the inner diameter of the first variable diameter portions 1021 gradually increases from small to large along the long axis direction, and the inner diameter of the second variable diameter portions 1022 gradually decreases from large to small along the long axis direction. The first variable diameter portions 1021 gradually increase from small to large at the inlet, which can make the fluid disperse in a more gentle way when entering the hose, reduce the sudden change of fluid velocity, thereby reducing the turbulent flow and pressure loss formed at the inlet of the fluid, and the second variable diameter portions 1022 gradually decrease from large to small and are opposite to the first variable diameter portions 1021, which can re-converge and accelerate the already dispersed fluid, making the fluid velocity distribution in the hose more uniform, further optimizing the flow state of the fluid, which helps to improve the working efficiency of the hydraulic system and reduce energy loss.
[0025] It is worth noting that the first variable diameter portions 1021 and the second variable diameter portions 1022 are both composed of a plurality of steps 1023, the plurality of steps 1023 form a stepped variable diameter structure for the first variable diameter portions 1021 and the second variable diameter portions 1022, and a plurality of protrusions 1024 are arranged on each step 1023, the protrusions 1024 are arranged in a staggered manner along the long axis direction of the inner tube layer 102. The stepped variable diameter design formed by the steps 1023 increases the structural strength at the variable diameter portion, when the fluid flows through the variable diameter portion, the stepped structure can disperse the impact force of the fluid, avoiding damage to the hose caused by local stress concentration, which is particularly important for hydraulic systems that bear high pressure and frequent impact, and can prolong the service life of the hose. When the fluid flows through the variable diameter portion, the hemispherical protrusions 1024 will disturb the flow of the fluid and form local eddies, and the staggered arrangement of the protrusions 1024 allows the eddies generated at different positions to interfere and merge with each other, effectively breaking the laminar flow state of the fluid and promoting the more uniform mixing of additives, anti-wear agents and other components in the hydraulic oil. In addition, the staggered distribution of the protrusions 1024 can guide the fluid to form a more orderly flow path, reducing energy loss caused by turbulence and ensuring stable operation of the hydraulic system. Finally, the stepped variable diameter structure combined with the protrusions 1024 can make the pressure change more gentle during the variable diameter process, the resistance generated by the protrusions 1024 can adjust the flow rate of the fluid, avoid pressure concentration caused by sudden change of flow rate, reduce the influence of pressure fluctuation on the system, and improve the stability and reliability of the system.
[0026] Working principle: the embodiment provides a fire-resistant hydraulic rubber hose, when in use, through the arrayed connecting holes 203 on the flange plate 201, cooperating with connecting pieces such as bolts and nuts, the hose is fixedly connected with other parts of the hydraulic system, the annular groove 202 at the front end of the flange plate 201 is located outside the flow-through port 101 and can be used for installing sealing rings and other sealing pieces, a sealing structure is formed in the connecting process, leakage of hydraulic oil at the connecting position is prevented, and the sealing property and stability of the entire hydraulic system are ensured, when hydraulic oil and the like enters the hose, firstly passes through the first reducing portion 1021 of the inner tube layer 102, the inner diameter of the first reducing portion 1021 gradually increases from small to large along the long axis direction, and the first reducing portion 1021 is composed of a ladder-shaped reducing structure formed by a plurality of steps 1023, the design makes the flow velocity of the fluid not suddenly change when the fluid enters the hose, but gradually and gently disperse along with the increase of the pipe diameter, the turbulent flow and pressure loss caused by the sudden change of the flow velocity are reduced, then the fluid enters the second reducing portion 1022 which is in butt joint with the first reducing portion 1021, the inner diameter of the second reducing portion 1022 gradually decreases from large to small along the long axis direction, the dispersed fluid is converged and accelerated, the flow velocity distribution of the fluid in the hose is further optimized, the fluid flows more uniformly and stably, and the working efficiency of the hydraulic system is improved, the semispherical protrusions 1024 are arranged on each step 1023 of the first reducing portion 1021 and the second reducing portion 1022 in an arrayed mode, and the protrusions 1024 of the inner tube layer 102 are arranged in an interlaced mode along the long axis direction, when the fluid flows through the protrusions 1024, the protrusions 1024 disturb the flow of the fluid and form local vortexes, the vortexes generated at different positions interfere with and fuse with each other due to the interlaced arrangement of the protrusions 1024, the laminar flow state of the fluid is effectively broken, the components such as additives and anti-wear agents in the hydraulic oil are more uniformly mixed, meanwhile, the protrusions 1024 can guide the fluid to form a more orderly flow path, reduce the energy loss caused by the turbulent flow, and the resistance generated by the protrusions 1024 to the fluid can adjust the flow velocity of the fluid, avoids the pressure concentration caused by the sudden change of the flow velocity, and reduces the pressure fluctuation of the system.
[0027] The embodiments of the utility model discloses the better embodiment, but is not limited to this, the ordinary skill of the art, the spirit of the utility model is appreciated to the above-mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.
Claims
1. A fire resistant hydraulic rubber hose characterized by, The hydraulic rubber hose body (100) is provided with a flow-through port (101), and comprises an inner tube layer (102), a connecting layer (103), a reinforcing layer (104), a heat insulation layer (105) and an outer tube layer (106). The connecting layer (103) is fixed on the outer layer of the inner tube layer (102) by an adhesive. The reinforcing layer (104) is fixed on the outer layer of the connecting layer (103) by an adhesive. The outer tube layer (106) is heat-shrunkly wrapped on the outer layer of the heat insulation layer (105). The mounting mechanism (200) comprises flanges (201) symmetrically arranged at both ends of the hydraulic rubber hose body (100). The flanges (201) are provided with connecting holes (203) in an array. The front end of the flange (201) is provided with an annular groove (202) outside the flow-through port (101).
2. A fire resistant hydraulic rubber hose according to claim 1, wherein The inner tube layer (102) is made of nitrile rubber material, and the outer tube layer (106) is made of chlorobutyl rubber material. The outer surfaces of the inner tube layer (102) and the outer tube layer (106) are corrugated.
3. A fire resistant hydraulic rubber hose according to claim 2, wherein The connecting layer (103) is made of ethylene-propylene rubber material, and the inner wall of the connecting layer (103) is provided with a corrugated structure. The corrugated structure of the inner wall of the connecting layer (103) is butted between the corrugated structures of the outer surfaces of the inner tube layer (102).
4. The fire resistant hydraulic rubber hose of claim 3, wherein The reinforcing layer (104) is made of metal wire mesh, and the heat insulation layer (105) is made of ceramic fiber material. The heat insulation layer (105) is fixed on the outer layer of the reinforcing layer (104) by an adhesive.
5. A fire resistant hydraulic rubber hose according to claim 4, wherein The inner tube layer (102) comprises a plurality of first variable diameter portions (1021) and a plurality of second variable diameter portions (1022). The first variable diameter portions (1021) and the second variable diameter portions (1022) are arranged in abutment. The inner diameter of the first variable diameter portions (1021) gradually increases from small to large along the long axis direction. The inner diameter of the second variable diameter portions (1022) gradually decreases from large to small along the long axis direction.
6. A fire resistant hydraulic rubber hose according to claim 5, wherein The first variable diameter portions (1021) and the second variable diameter portions (1022) are both formed by a plurality of steps (1023). The plurality of steps (1023) form a stepped variable diameter structure for the first variable diameter portions (1021) and the second variable diameter portions (1022). A plurality of protrusions (1024) are arranged in an array on the plurality of steps (1023). The protrusions (1024) are semispherical. The protrusions (1024) are staggered along the long axis direction of the inner tube layer (102).