A high containment flexible pipe joint

Abstract

The present application relates to a kind of high sealing flexible pipe joints, including two inner core pipes and two outer sleeve pipes, the inner core pipe is provided with the inner plug barrel portion that can be inserted flexible pipe opening between outer sleeve pipe, sealing assembly is provided on the outer sleeve pipe, sealing ring is provided between the two inner core pipes, the inner core pipe and the inner plug barrel portion are provided with tight component, the tight component includes flow passage, the joint is respectively provided on the two inner core pipes, the joint is provided with clamping assembly, the fastening component is used for the gas in the inner plug barrel portion when flexible pipe is inserted into inner plug barrel portion, and sealing ring is reinforced and sealed by flow passage, the connection of flexible pipe is reinforced and sealed by being provided with sealing assembly and tight component, reduce the probability of occurrence of " hydrogen embrittlement " phenomenon.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen, more particularly to a flexible pipe joint with high sealing performance. BACKGROUND

[0002] Hydrogen is a highly flammable gas, colorless and transparent, odorless and tasteless, and difficult to dissolve in water. Hydrogen is the lightest gas known in the world, and can enter the crystal lattice of many metals, causing the "hydrogen embrittlement" phenomenon. Therefore, special materials are required for the storage tank and pipeline of hydrogen, and the design is more complex. Flexible pipelines are widely used to transport corrosive and non-corrosive media, such as oil, gas, and injected chemicals. In order to prevent the soft pipe from bursting due to excessive pressure increase caused by leakage or permeation, the specification requires the design of a discharge system, and the leaked medium must be connected to the discharge through the pipe joint.

[0003] At present, the sealing performance of the pipeline for transporting hydrogen is not high or the corresponding anti-leakage structure is not designed, so that hydrogen leaks and cannot be detected and repaired in time, and the probability of "hydrogen embrittlement" phenomenon increases, resulting in increased local leakage. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a flexible pipe joint with high sealing performance. The connection of the flexible pipeline is reinforced and sealed by the sealing assembly and the tight assembly, thereby reducing the probability of "hydrogen embrittlement" phenomenon.

[0005] The technical solution of the present application is as follows:

[0006] A flexible pipe joint with high sealing performance comprises two inner core pipes and two outer sleeve pipes. An inner plug barrel part that can be inserted into the opening of the flexible pipe is arranged between the inner core pipe and the outer sleeve pipe. A sealing assembly is arranged on the outer sleeve pipe. A sealing ring is arranged between the two inner core pipes. A tight assembly is arranged between the inner core pipe and the inner plug barrel part. The tight assembly comprises a flow pipeline. A joint is arranged on each of the two inner core pipes. A clamping assembly is arranged on the joint. The fastening assembly is used to reinforce and seal the sealing ring by the flow pipeline when the flexible pipe is inserted into the inner plug barrel part.

[0007] As a preferred embodiment, the sealing assembly comprises a sealing wedge block arranged on the outer sleeve pipe, and the outer wall of the inner core pipe is matched with the sealing wedge block.

[0008] As a preferred embodiment, the tight assembly further comprises a push plate arranged on the sealing ring, and the flow pipeline is arranged on the inner wall of the inner core pipe. The push plate cooperates with the sealing ring.

[0009] As a preferred embodiment, the clamping assembly comprises a buckle seat fixedly arranged on the outer sleeve pipe and an insertion plate arranged on the joint. The insertion plate cooperates with the buckle seat.

[0010] As a preferred, the inner core pipe is provided with a sealing gasket, which cooperates with the flexible pipe.

[0011] As a preferred, the inner core pipe is provided with an external thread, and the outer sleeve pipe is provided with an internal thread, which cooperates with the external thread.

[0012] As a preferred, the one side of the joint is provided with a protrusion, and the other side of the joint is provided with a groove, which cooperates with the protrusion.

[0013] As a preferred, the side of the protrusion and the groove is provided with a sealing glue.

[0014] As a preferred, the inner surface of the outer sleeve pipe is provided with an outward expanding structure from inside to outside.

[0015] The present application has the following advantages:

[0016] 1. The present application is provided with a sealing assembly, which is provided with a sealing wedge block, and the shape of the outer wall of the inner core pipe matches the sealing wedge block, thereby further increasing the sealing performance of the pipeline and preventing hydrogen leakage. The inner core pipe is provided with a sealing gasket, which cooperates with the flexible pipe. The sealing gasket greatly improves the sealing performance between the flexible pipe and the inner core pipe and the outer sleeve pipe. In addition, the inner surface of the outer sleeve pipe is provided with an outward expanding structure from inside to outside, which prevents the flexible pipe from being damaged due to excessive insertion into the inner insertion barrel, and greatly enhances the sealing performance of the flexible pipe.

[0017] The present application is provided with a tight assembly, which pushes the gas in the inner insertion barrel into the flow pipeline and pushes the push plate to slide towards the sealing ring when the flexible pipe is pushed into the inner insertion barrel, so as to clamp and seal the sealing ring. The tight assembly makes the connection between the two inner core pipes tightly fit, thereby improving the safety of hydrogen transportation. In addition, the inner core pipe is provided with an external thread, and the outer sleeve pipe is provided with an internal thread, which cooperates with the external thread, thereby improving the tightness between the outer sleeve pipe and the inner core pipe, and enhancing the sealing performance of the joint by the outer sleeve pipe.

[0018] The present application is provided with a clamping assembly, which cooperates with the plug-in plate and the buckle seat, thereby enhancing the firmness of the plug-in plate to the joint, further improving the sealing performance of the conveying pipeline, and simultaneously pressing and sealing the joint by the protrusion and the groove on the joint, thereby improving the sealing ability of the joint to the connection of the pipeline. The side of the protrusion and the groove is provided with a sealing glue, which has good adhesion and elasticity, long service life, improved sealing performance of the joint, and reduced probability of hydrogen leakage.

[0019] In summary, the present application has the functions of strong sealing and leakage prevention, and is suitable for the field of hydrogen technology. BRIEF DESCRIPTION OF DRAWINGS:

[0020] The application will be further described below with reference to the drawings:

[0021] Figure 1 It is a structural schematic diagram of a high sealing flexible pipe joint;

[0022] Figure 2 It is a sectional structural schematic diagram of a flexible pipe joint;

[0023] Figure 3 It is Figure 2 the enlarged view of A in the middle;

[0024] Figure 4 It is Figure 2 the enlarged view of B in the middle;

[0025] Reference signs: 1 - inner core pipe; 2 - outer sleeve pipe; 3 - flexible pipe; 4 - inner insertion barrel part; 5 - sealing assembly; 51 - sealing wedge; 6 - sealing ring; 7 - tight assembly; 71 - flow channel; 72 - push plate; 8 - joint; 9 - clamping assembly; 91 - buckle seat; 92 - insertion plate; 10 - sealing gasket; 11 - outer thread; 12 - inner thread; 21 - protrusion; 22 - groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings.

[0027] Example 1

[0028] The embodiments of the application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0029] As Figures 1 to 4 shown, a high sealing flexible pipe joint comprises two inner core pipes 1 and two outer sleeve pipes 2, an inner insertion barrel part 4 which can be inserted into an opening of a flexible pipe 3 is arranged between the inner core pipe 1 and the outer sleeve pipe 2, a sealing assembly 5 is arranged on the outer sleeve pipe 2, a sealing ring 6 is arranged between the two inner core pipes 1, a tight assembly 7 is arranged between the inner core pipe 1 and the inner insertion barrel part 4, the tight assembly 7 comprises a flow channel 71, a joint 8 is arranged on each of the two inner core pipes 1, a clamping assembly 9 is arranged on the joint 8, and the tight assembly 7 is used to reinforce and seal the sealing ring 6 by the gas in the inner insertion barrel part 4 through the flow channel 71 when the flexible pipe 3 is inserted into the inner insertion barrel part 4.

[0030] As Figure 2As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage.

[0031] As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage. Figure 4 As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage.

[0032] As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage. Figure 3 As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage.

[0033] As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage. Figure 2 As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage.

[0034] As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage. Figure 2 As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage.

[0035] As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage. Figure 2 As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage.

[0036] As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage. Figure 2 As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage.

[0037] Example Two

[0038] As shown, the sealing assembly 5 includes a sealing wedge 51 arranged on the outer sleeve 2, and the outer wall of the inner core tube 1 is shaped to match the sealing wedge 51. The sealing assembly 5 further increases the sealing of the pipeline to prevent hydrogen leakage. Figure 2As shown in the figure, the same or corresponding parts as in the first embodiment are denoted by the same reference numerals, and for the sake of brevity, only the differences from the first embodiment are described below; the second embodiment differs from the first embodiment in that the side of the protrusion 21 in contact with the groove 22 is provided with sealing glue.

[0039] Here, the second embodiment is provided with sealing glue on the side of the protrusion 21 in contact with the groove 22, and the sealing glue has good adhesive properties and elasticity, a long service life, improves the sealing of the joint 8, and reduces the probability of hydrogen leakage.

[0040] In the description of the present application, it should be understood that the terms "front", "back", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0041] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", i.e. in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0042] The above description in conjunction with the drawings is only a preferred embodiment of the present application, but the present application is not limited to the above-mentioned embodiments, and it should be noted that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present application, and these should also be considered as the protection scope of the present application, and will not affect the effect and practicability of the present application.

Claims

1. A high containment flexible pipe joint comprising two inner core pipes (1) and two outer sleeve pipes (2), characterised in that: The inner core pipe (1) and the outer sleeve pipe (2) are provided with an inner insertion cylinder (4) which can be inserted into the opening of the flexible pipe (3), the outer sleeve pipe (2) is provided with a sealing assembly (5), the two inner core pipes (1) are provided with a sealing ring (6), the inner core pipe (1) and the inner insertion cylinder (4) are provided with a tight assembly (7), the tight assembly (7) comprises a flow channel (71), the two inner core pipes (1) are respectively provided with a connector (8), the connector (8) is provided with a clamping assembly (9), the tight assembly (7) is used for reinforcing and sealing the sealing ring (6) by the gas in the inner insertion cylinder (4) through the flow channel (71) when the flexible pipe (3) is inserted into the inner insertion cylinder (4).

2. A flexible pipe joint having high sealing integrity according to claim 1 characterised in that: The sealing assembly (5) comprises a sealing wedge (51) arranged on the outer sleeve pipe (2), and the outer wall of the inner core pipe (1) is in conformity with the sealing wedge (51).

3. A flexible pipe joint having high sealing properties according to claim 1, characterised in that: The tight assembly (7) further comprises a push plate (72) arranged on the sealing ring (6), and the flow channel (71) is arranged on the inner wall of the inner core pipe (1), and the push plate (72) is matched with the sealing ring (6).

4. A flexible pipe joint of high sealing integrity according to claim 1, characterised in that: The clamping assembly (9) comprises a buckle seat (91) fixedly arranged on the outer sleeve pipe (2) and an insertion plate (92) arranged on the connector (8), and the insertion plate (92) is matched with the buckle seat (91).

5. A flexible pipe joint of high sealing integrity according to claim 1, characterised in that: The inner core pipe (1) is provided with a sealing gasket (10), and the sealing gasket (10) is matched with the flexible pipe (3).

6. A flexible pipe joint having high containment according to claim 1, characterised in that: The inner core pipe (1) is provided with an outer thread (11), the outer sleeve pipe (2) is provided with an inner thread (12), and the outer thread (11) and the inner thread (12) are matched.

7. A flexible pipe joint of high sealing integrity according to claim 1, characterised in that: One side of the connector (8) is provided with a protrusion (21), and the other side of the connector (8) is provided with a groove (22), and the protrusion (21) is matched with the groove (22).

8. A flexible pipe joint of high sealing integrity according to claim 7, characterised in that: The side of the protrusion (21) and the groove (22) in contact is provided with a sealing glue.

9. A flexible pipe joint of high sealing integrity according to claim 1, characterised in that: The inner surface of the outer sleeve pipe (2) is provided with an outward expanding structure.

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