Novel medium-pressure fireproof Teflon hose assembly

Abstract

The novel medium-pressure fireproof Teflon hose assembly comprises a core rod, a first sealing groove and a Teflon inner pipe, a nut is arranged in the middle of the outer end of the core rod, and a sleeve is arranged on the outer side of the right end of the core rod; a first sealing groove is formed in the outer surface of the core rod, a second sealing groove is formed in the middle of the outer surface of the core rod, and a barb block is integrally and fixedly mounted in the middle of the outer side of the core rod; and a Teflon inner tube is arranged at the right end of the outer side of the core rod. The utility model belongs to the technical field of oil delivery hoses, and aims to solve the problems that in the prior art, the sealing performance of the joint with a core rod is poor, the hidden danger of hose breakage and oil leakage is likely to occur, and meanwhile the fireproof performance is not achieved. The technical effects are that the sealing performance of the connection part of the core rod is improved, the phenomena of hose breakage and oil leakage are avoided, and meanwhile, the fireproof performance is achieved.

Description

Technical Field

[0001] This application relates to the field of oil hose technology, specifically to a novel medium-pressure fireproof Teflon hose assembly. Background Technology

[0002] Oil transfer hoses are pipes used to transport liquids or gases, typically made of flexible materials such as rubber, polyurethane, or polyethylene. Currently, oil transfer hoses are widely used in petroleum, chemical, aviation, and marine industries to transport substances such as oil, natural gas, water, and chemicals. When using oil transfer hoses, it is necessary to regularly inspect them for wear, aging, and corrosion, and replace damaged hoses promptly to ensure safe transportation. Furthermore, proper installation and use of the hoses are crucial; excessive bending, twisting, or external impacts should be avoided to prevent hose rupture or leakage.

[0003] However, most existing oil hoses currently use traditional rubber hose assemblies. Due to the high oil pressure during oil output, the sealing at the connection between the hose and the core rod is poor after long-term use, which can easily lead to hose rupture and oil leakage. In addition, they do not have fire-resistant properties, which shortens the overall service life. Utility Model Content

[0004] Therefore, this application provides a novel medium-pressure fireproof Teflon hose assembly to solve the problems of poor sealing at the connection with the core rod, which easily leads to hose rupture and oil leakage, and the lack of fireproof performance.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A novel medium-pressure fireproof Teflon hose assembly includes a core rod, a first sealing groove, and a Teflon inner tube. A nut is provided at the middle of the outer end of the core rod, and a sleeve is provided on the outer side of the right end of the core rod.

[0007] The outer surface of the core rod is provided with a first sealing groove, and the middle part of the outer surface of the core rod is provided with a second sealing groove. A barb block is integrally fixedly installed on the middle part of the outer side of the core rod.

[0008] The outer right end of the core rod is provided with a Teflon inner tube, and the outer surface of the Teflon inner tube is tightly connected with a steel wire braided layer. The outer surface of the steel wire braided layer is connected with a filler layer, and an oil pressure detection probe is installed in the middle of the inner side of the Teflon inner tube.

[0009] Furthermore, one end of the sleeve near the nut extends to the outside of the barb block, and one end of the Teflon inner tube extends into the inside of the sleeve.

[0010] Furthermore, the depth of the first sealing groove is greater than the depth of the second sealing groove, and the second sealing groove is located between the two sets of the first sealing grooves.

[0011] Furthermore, the end of the Teflon inner tube near the nut is in contact with the barb block, and the longitudinal section of the barb block is triangular.

[0012] Furthermore, the two ends of the filling layer extend to the outer side of the sleeve, and the inner diameter of the middle part of the filling layer is smaller than the inner diameter of its port.

[0013] Furthermore, the inner wall of the sleeve is provided with a pre-made groove, and the pre-made groove is in contact with the outer surface of the Teflon inner tube. The pre-made groove and the first sealing groove are arranged in an alternating manner.

[0014] Compared with the prior art, this application has at least the following beneficial effects:

[0015] 1. The depth of the first sealing groove is greater than that of the second sealing groove, and the second sealing groove is located in the middle of the two sets of the first sealing grooves. During the crimping process, the Teflon inner tube is deformed by applying external force. Part of the inner wall of the Teflon inner tube creeps into the first and second sealing grooves and cooperates to achieve the sealing effect. At the same time, the combined use of the first and second sealing grooves can effectively ensure that the whole can maintain the seal during long-term high-pressure use and prevent the medium from leaking at the connection between the joint and the pipe body.

[0016] 2. During the crimping process, the pre-made groove directly contacts the Teflon inner tube. Due to the radial compressive force generated during crimping, the Teflon inner tube is compressed between the sleeve and the core rod, creeping into the pre-made groove. This facilitates further improvement in the stability and sealing of the Teflon inner tube installation. At the same time, the pre-made groove and the first sealing groove are staggered, which further improves the installation effect of the Teflon inner tube on the core rod and the sleeve, giving the whole a greater pull-out resistance.

[0017] 3. The filler layer is made of glass fiber reinforced silicone rubber composite material. On the one hand, the glass fiber enhances the mechanical strength and structural stability of the composite material; on the other hand, the flame retardant properties of silicone rubber and the high temperature resistance of glass fiber work together to give the composite material good overall fire resistance. Attached Figure Description

[0018] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are capable of making conventional adjustments or further optimizations to the addition / reduction / classification of certain units, their specific shapes, positional relationships, connection methods, size ratios, etc.

[0019] Figure 1 A front cross-sectional view of a novel medium-pressure fireproof Teflon hose assembly provided in one embodiment of this application;

[0020] Figure 2 A front view schematic diagram of the connection between the core rod and the barb block of a novel medium-pressure fireproof Teflon hose assembly provided in one embodiment of this application;

[0021] Figure 3 A novel medium-pressure fire-resistant Teflon hose assembly is provided as an embodiment of this application. Figure 1 Enlarged structural diagram at point A in the middle.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Core rod; 2. Nut; 3. Sleeve; 4. First sealing groove; 5. Second sealing groove; 6. Barbed block; 7. Teflon inner tube; 8. Steel wire braided layer; 9. Filler layer; 10. Oil pressure detection probe; 11. Precast groove. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 3 As shown in the embodiment of this application, a novel medium-pressure fireproof Teflon hose assembly includes: a core rod 1, a first sealing groove 4 and a Teflon inner tube 7. A nut 2 is provided at the middle of the outer end of the core rod 1, and a sleeve 3 is provided on the outer side of the right end of the core rod 1.

[0026] The core rod 1, nut 2 and sleeve 3 together form a metal connector assembly. The structure and size of the core rod 1 and sleeve 3 can determine the sealing performance and crimping strength of the hose after crimping.

[0027] The outer surface of the core rod 1 is provided with a first sealing groove 4, and the middle part of the outer surface of the core rod 1 is provided with a second sealing groove 5. A barb block 6 is integrally fixedly installed on the middle part of the outer side of the core rod 1, and the end of the sleeve 3 near the nut 2 extends to the outer side of the barb block 6.

[0028] The depth of the first sealing groove 4 is greater than the depth of the second sealing groove 5, and the second sealing groove 5 is located between the two sets of first sealing grooves 4. During the crimping process, external force is applied to deform the Teflon inner tube 7, and part of the inner wall of the Teflon inner tube 7 creeps into the first sealing groove 4 and the second sealing groove 5 and engages with it, thereby achieving a sealing effect. At this time, the combined use of the first sealing groove 4 and the second sealing groove 5 can effectively ensure that the whole system remains sealed under long-term high-pressure conditions, preventing the medium from leaking at the connection between the joint and the pipe body.

[0029] Meanwhile, one end of the Teflon inner tube 7 extends into the interior of the sleeve 3. The end of the Teflon inner tube 7 near the nut 2 contacts the barb block 6, and the longitudinal section of the barb block 6 is triangular. During the crimping process, the end of the Teflon inner tube 7 can creep into the sleeve 3. Combined with the function of the barb block 6 and the sleeve 3, it can effectively ensure that the pipe connection is not easy to loosen, prevent the core rod 1 from falling off the Teflon inner tube 7, and improve the tightness of the overall connection.

[0030] A Teflon inner tube 7 is provided on the outer right end of the core rod 1, and a steel wire braided layer 8 is tightly connected to the outer surface of the Teflon inner tube 7. A filler layer 9 is connected to the outer surface of the steel wire braided layer 8, and an oil pressure detection probe 10 is installed in the middle of the inner side of the Teflon inner tube 7.

[0031] The design of the steel wire braided layer 8 can increase the overall strength, thereby avoiding the risk of fatigue cracking during oil transportation. The two ends of the filling layer 9 extend to the outside of the sleeve 3, and the inner diameter of the middle of the filling layer 9 is smaller than the inner diameter of its port, which can effectively increase the coverage area of ​​the filling layer 9. At the same time, the filling layer 9 is made of glass fiber reinforced silicone rubber composite material, thus giving the whole structure fireproof function.

[0032] Meanwhile, the oil pressure can be detected during the oil transportation process using the oil pressure detection probe 10, which facilitates real-time observation of oil pressure changes and transmits the data to an external oil pressure detector via a communication cable for data processing and observation.

[0033] The inner wall of the sleeve 3 is provided with a pre-made groove 11, and the pre-made groove 11 is in contact with the outer surface of the Teflon inner tube 7.

[0034] During the crimping process, the prefabricated groove 11 directly contacts the Teflon inner tube 7. Due to the radial compressive force generated during crimping, the Teflon inner tube 7 is compressed between the sleeve 3 and the core rod 1 and creeps into the prefabricated groove 11, thereby facilitating further improvement in the stability and sealing of the Teflon inner tube 7 installation and giving the whole unit greater pull-out resistance.

[0035] Meanwhile, the prefabricated groove 11 and the first sealing groove 4 are arranged in an alternating manner, which facilitates further improvement of the installation effect of the Teflon inner tube 7 on the core rod 1 and the sleeve 3 respectively.

[0036] Working principle

[0037] By crimping, both ends of the Teflon inner tube 7 are crimped onto the outside of the core rod 1, causing the Teflon inner tube 7 to deform. At this time, the inner wall of the Teflon inner tube 7 creeps into the first sealing groove 4 and the second sealing groove 5, engaging with it. This effectively improves the tightness of the connection between the core rod 1 and the Teflon inner tube 7, achieving a seal. Simultaneously, the ends of the Teflon inner tube 7 creep into the sleeve 3 and the outside of the barb 6, effectively ensuring that the pipe connection is not easily loosened, preventing the core rod 1 from falling off the Teflon inner tube 7, and improving the overall tightness of the connection. Due to the radial compressive force generated during crimping, the outer wall of the Teflon inner tube 7 creeps into the pre-fabricated groove 11, engaging with it, further improving the stability and sealing of the Teflon inner tube 7 installation.

[0038] The filler layer 9 is made of glass fiber reinforced silicone rubber composite material. On the one hand, the glass fiber enhances the mechanical strength and structural stability of the composite material; on the other hand, the flame-retardant properties of silicone rubber and the high-temperature resistance of glass fiber work synergistically, giving the composite material good overall fire resistance. The design of the steel wire braided layer 8 increases the overall strength, thereby avoiding the risk of fatigue cracking during oil transportation and forming an integral structure.

[0039] During installation, the core rod 1 is fixed to the designated interface by the nut 2. Then, the oil pressure is detected by the oil pressure detection probe 10 during the oil transportation process. This allows for real-time observation of oil pressure changes, ensuring that the oil pressure is always in a medium-pressure state and avoiding excessive oil pressure that could cause the entire system to rupture.

[0040] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A novel medium-pressure fire-resistant Teflon hose assembly, comprising a core rod (1), a first sealing groove (4), and a Teflon inner tube (7), characterized in that, A nut (2) is provided at the middle of the outer end of the core rod (1), and a sleeve (3) is provided on the outer side of the right end of the core rod (1); The outer surface of the core rod (1) is provided with a first sealing groove (4), and the middle part of the outer surface of the core rod (1) is provided with a second sealing groove (5). A barb block (6) is integrally fixedly installed on the middle part of the outer side of the core rod (1). The outer right end of the core rod (1) is provided with a Teflon inner tube (7), and the outer surface of the Teflon inner tube (7) is tightly connected with a steel wire braided layer (8). The outer surface of the steel wire braided layer (8) is connected with a filler layer (9). An oil pressure detection probe (10) is installed in the middle of the inner side of the Teflon inner tube (7).

2. The novel medium-pressure fireproof Teflon hose assembly according to claim 1, characterized in that, The sleeve (3) extends to the outside of the barb block (6) at one end near the nut (2), and the Teflon inner tube (7) extends to the inside of the sleeve (3).

3. The novel medium-pressure fireproof Teflon hose assembly according to claim 1, characterized in that, The depth dimension of the first sealing groove (4) is greater than the depth dimension of the second sealing groove (5), and the second sealing groove (5) is located in the middle of the two sets of the first sealing grooves (4).

4. A novel medium-pressure fireproof Teflon hose assembly according to claim 2, characterized in that, The Teflon inner tube (7) is in contact with the barb block (6) at one end near the nut (2), and the longitudinal section of the barb block (6) is triangular.

5. A novel medium-pressure fireproof Teflon hose assembly according to claim 1, characterized in that, The two ends of the filling layer (9) extend to the outside of the sleeve (3), and the inner diameter of the middle part of the filling layer (9) is smaller than the inner diameter of its port.

6. A novel medium-pressure fireproof Teflon hose assembly according to claim 1, characterized in that, The inner wall of the sleeve (3) is provided with a pre-made groove (11), and the pre-made groove (11) is in contact with the outer surface of the Teflon inner tube (7). The pre-made groove (11) and the first sealing groove (4) are arranged in an alternating manner.

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