Corrosion-resistant high-pressure sealing joint for hydrogen energy pipeline

Abstract

The corrosion-resistant high-pressure sealing joint for the hydrogen energy pipeline comprises an outer pipe, a rotating groove is formed in the peripheral wall of the outer pipe, a rotating ring is arranged in the rotating groove, a connecting rod is fixedly arranged in the rotating ring, and external threads are arranged at the positions, located at the two ends of the rotating ring, of the peripheral wall of the connecting rod. The utility model relates to the technical field of hydrogen energy pipeline connecting pieces. According to the corrosion-resistant high-pressure sealing joint for the hydrogen energy pipeline, when the pipeline is replaced, a rotating ring is manually rotated, the rotating ring drives a connecting rod to rotate to be matched with an external thread to push a threaded sleeve to move towards the two ends, and is matched with a sealing structure to seal a through groove in the surface of a sealing plate, so that the two ends of an outer pipe are mutually sealed through the sealing structure and the sealing plate at the two ends; at the moment, the interior of the outer pipe is in a sealed state, when the pipeline is disassembled, equipment at the corresponding positions of the two ends of the pipeline only needs to be sealed, the pipeline can be directly replaced, shutdown for pressure relief is not needed, and the convenience of pipeline replacement can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydrogen energy pipeline connecting piece especially is hydrogen energy pipeline corrosion -resistant high pressure sealing joint. BACKGROUND

[0002] The hydrogen energy pipeline refers to a kind of technical means that hydrogen is transported from production place to consumption place by special pipeline.This kind of pipeline transportation mode is similar to natural gas delivery, hydrogen is transported to destination by compressing hydrogen and transporting it by pipeline, and the sealing reliability of high-pressure delivery pipeline of hydrogen energy as clean energy carrier is the core of system safe operation, and hydrogen energy pipeline sealing joint is used to connect adjacent pipeline;

[0003] In the prior art, the connecting piece of hydrogen energy pipeline is mostly connected to hydrogen energy pipeline by sealing ring and flange, it is difficult to close hydrogen energy pipeline, so when replacing pipeline, it is mostly needed to stop machine and release pressure, and it needs a long time to stop machine and release pressure, so that the replacement speed is difficult to improve, and the continuous operation efficiency of pipeline is easily affected. UTILITY MODEL CONTENT

[0004] According to the deficiencies existing in the prior art, the utility model aims at providing a hydrogen energy pipeline corrosion -resistant high pressure sealing joint to solve the technical problems mentioned in the background.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A kind of hydrogen energy pipeline corrosion -resistant high pressure sealing joint, including outer tube, rotation groove is set to the outer peripheral wall of outer tube, rotation ring is arranged in rotation groove, connecting rod is fixedly arranged in the inside of rotation ring, outer thread is set to the outer peripheral wall of connecting rod at both ends of rotation ring, and the thread direction of outer thread at both ends is opposite;

[0007] The both ends of the outer tube are fixedly provided with closure plate, the closure plate is rotatably connected with the connecting rod, and the inside of the closure plate is provided with a through slot at the position close to the edge.

[0008] The outer peripheral wall of the connecting rod is provided with a threaded sleeve, and the threaded sleeve is threadedly connected with the outer thread, and the outer peripheral wall of the threaded sleeve is provided with a closure structure.

[0009] Further, the closure structure includes an outer expansion plate, which is sleeved on the outer peripheral wall of the threaded sleeve and fixedly connected with the threaded sleeve, and a plurality of closure plugs are fixedly arranged on the outer peripheral wall of the outer expansion plate, and the closure plugs correspond to the through slots one by one.

[0010] Further, the outer wall of the closure plug is provided with a guide piece, a connecting groove is formed at the top end of the guide piece, a connecting guide rail is slidably arranged in the connecting groove, and the connecting guide rail is fixedly connected with the inner wall of the outer tube.

[0011] Further, the outer tube is provided with a sealing snap ring at both ends.

[0012] Further, the sealing bearing is arranged at the connection between the closing plate and the connecting rod.

[0013] Further, the rotating ring is provided with a rotating sealing ring on both sides of the inner part, and the rotating sealing ring is attached to the inner wall of the outer tube.

[0014] In summary, the utility model has at least one of the following beneficial technical effects:

[0015] 1. The hydrogen energy pipeline corrosion-resistant high-pressure sealing joint needs to replace the pipeline, manually rotates the rotating ring, the rotating ring drives the connecting rod to rotate, cooperates with the external thread to push the threaded sleeve to move to both ends, and cooperates with the closing structure to close the through slot on the surface of the closing plate, so that the closing structure and the closing plate at both ends close the two ends of the outer tube, at this time, the inside of the outer tube is in a sealed state, when the pipeline is disassembled, only the equipment at the corresponding position of both ends of the pipeline needs to be closed, the pipeline can be directly replaced, without stopping and depressurizing, and the convenience of pipeline replacement can be effectively improved.

[0016] 2. The hydrogen energy pipeline corrosion-resistant high-pressure sealing joint is used for guiding the movement of the closing structure by cooperating the connecting groove with the connecting rail, prevents the closing structure from rotating with the connecting rod, makes the closing plug correspond to the through slot at all times, and facilitates the closing plug to close the through slot. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 It is a structure schematic view of the hydrogen energy pipeline corrosion-resistant high-pressure sealing joint of the utility model.

[0019] Figure 2 It is a structure schematic view of the outer tube of the hydrogen energy pipeline corrosion-resistant high-pressure sealing joint of the utility model.

[0020] Figure 3 It is a structure schematic view of the closing structure, rotating ring and connecting rod of the hydrogen energy pipeline corrosion-resistant high-pressure sealing joint of the utility model.

[0021] Figure 4The utility model discloses a kind of rotating ring and connecting rod structure schematic view of corrosion-resistant high-pressure sealing joint for hydrogen energy pipeline.

[0022] Figure 5 The utility model discloses a kind of closed structure structure schematic view of corrosion-resistant high-pressure sealing joint for hydrogen energy pipeline.

[0023] In the drawing, 1, outer tube;2, rotating groove;3, rotating ring;4, connecting rod;5, outer thread;6, closure plate;7, through groove;8, threaded sleeve;9, closed structure;91, outer expansion plate;92, closure plug;93, guide;94, connecting groove;95, connecting guide rail;10, sealing snap ring;11, sealing bearing;12, rotating sealing ring. DETAILED DESCRIPTION

[0024] The utility model makes further detailed description in combination with the drawing. Example 1

[0025] Reference Figures 1-5 The utility model discloses a kind of corrosion-resistant high-pressure sealing joint for hydrogen energy pipeline, including outer tube 1, the outer circumferential wall of outer tube 1 is set with rotating groove 2, rotating groove 2 inside is provided with rotating ring 3, rotating ring 3 is fixedly provided with connecting rod 4 in the inside, the outer circumferential wall of connecting rod 4 is located at the both ends of rotating ring 3 and is provided with outer thread 5, and the thread direction of outer thread 5 at both ends is opposite;

[0026] The both ends of the outer tube 1 are fixedly provided with closure plate 6, and the closure plate 6 is rotatably connected with the connecting rod 4, and the closure plate 6 is provided with through groove 7 at the position close to the edge in the inside.

[0027] The outer circumferential wall of the connecting rod 4 is sleeved with threaded sleeve 8, and the threaded sleeve 8 is threadedly matched with the outer thread 5, and the outer circumferential wall of the threaded sleeve 8 is provided with closed structure 9, and the outer circumferential wall of each component in the inside of the outer tube 1 is coated with tungsten carbide wear-resistant coating, to improve the service life of sealing joint, avoid the corrosion problem of hydrogen to each component.

[0028] In the embodiment, outer tube 1 is installed at the both ends of hydrogen energy pipeline, cooperates sealing snap ring 10 to be used for connecting two hydrogen energy pipelines, when needing to replace pipeline, rotating ring 3 is manually rotated, and connecting rod 4 is rotated by rotating ring 3, at this time, through the rotation of connecting rod 4, threaded sleeve 8 is moved to both ends, and closed structure 9 is closed to the through groove 7 on the surface of closure plate 6, as Figure 3The structure diagram of the closing structure, rotating ring and connecting rod of the high-pressure sealing joint is shown, the two ends of the outer pipe 1 are closed to each other through the closing structure 9 and the closing plate 6 at the two ends, the inside of the outer pipe 1 is in a sealed state, when the pipeline is disassembled, the equipment at the corresponding positions of the two ends of the pipeline only needs to be closed, the replacement of the pipeline can be completed, the shutdown and pressure relief are not needed, and the convenience of pipeline replacement can be effectively improved.

[0029] In further preferable embodiments of the present application, as shown in Figure 3 The closing structure 9 comprises an outer expansion plate 91, the outer expansion plate 91 is sleeved on the outer peripheral wall of the threaded sleeve 8 and is fixedly connected with the threaded sleeve 8, and the outer peripheral wall of the outer expansion plate 91 is fixedly provided with a plurality of closing plugs 92, which correspond to the through grooves 7 one by one.

[0030] In the embodiment, as shown in Figure 3 The structure diagram of the closing structure, rotating ring and connecting rod of the high-pressure sealing joint is shown, the outer expansion plate 91 is fixedly installed on the outer peripheral wall of the threaded sleeve 8, when the connecting rod 4 rotates, the threaded sleeve 8 is pushed to move, and then the outer expansion plate 91 is driven to move, so that the closing plug 92 is inserted into the inside of the through groove 7, and the purpose of closing the outer pipe 1 is achieved.

[0031] In further preferable embodiments of the present application, as shown in Figure 3 And 5 The outer wall of the closing plug 92 is provided with a guide piece 93, the top end of the guide piece 93 is provided with a connecting groove 94, and the connecting groove 94 is slidably provided with a connecting guide rail 95, and the connecting guide rail 95 is fixedly connected with the inner wall of the outer pipe 1.

[0032] In the embodiment, the guide piece 93 and the connecting groove 94 cooperate with the connecting guide rail 95 to guide the movement of the closing structure 9, prevent the closing structure 9 from rotating with the connecting rod 4, and enable the closing plug 92 to correspond to the through groove 7, so that the closing plug 92 can close the through groove 7.

[0033] In further preferable embodiments of the present application, as shown in Figure 1 And Figure 2 The two ends of the outer pipe 1 are provided with sealing clamping rings 10.

[0034] In the embodiment, the sealing clamping ring 10 is used for connecting the outer pipe 1 with the hydrogen pipeline, so that the outer pipe 1 is sealingly connected with the hydrogen pipeline at the corresponding position.

[0035] In further preferable embodiments of the present application, as shown in Figure 3 And Figure 4 The connecting position of the closing plate 6 and the connecting rod 4 is provided with a sealing bearing 11, and the sealing bearing 11 is fixedly connected with the connecting rod 4.

[0036] In the embodiment, the sealing bearing 11 is used to connect the connecting rod 4 and the sealing plate 6, the stability of the connecting rod 4 during rotation is improved, the coaxial degree with the sealing plate 6 is improved, the accuracy of the sealing plug 92 inserted into the through slot 7 is improved, the sealing plug 92 can correspond to the through slot 7 accurately, and the sealing performance is improved.

[0037] In the further preferable embodiment of the utility model, as shown in Figure 3 and Figure 4 The inside of the rotating ring 3 is provided with a rotating sealing ring 12 on both sides, and the rotating sealing ring 12 is attached to the inner wall of the outer pipe 1.

[0038] In the embodiment, the rotating sealing ring 12 is used to improve the sealing performance of the rotating groove 2, so that the hydrogen gas is prevented from leaking out through the rotating groove.

[0039] The implementation principle of the above embodiment is as follows: the rotating ring 3 is manually rotated, the rotating ring 3 drives the connecting rod 4 to rotate, the threaded sleeve 8 is moved to both ends through the rotation of the connecting rod 4 matched with the external thread 5, and the through slot 7 on the surface of the sealing plate 6 is closed through the sealing structure 9, the two ends of the outer pipe 1 are closed through the sealing structure 9 and the sealing plate 6, the inside of the outer pipe 1 is in a sealed state, when the pipeline is disassembled, the equipment at the corresponding positions of both ends of the pipeline is only needed to be closed, the pipeline can be directly replaced, when the pipeline replacement is completed, the sealing joint at both ends of the replaced pipeline is opened, and the replacement of the pipeline is completed.

[0040] The embodiments of the specific embodiment are preferable embodiments of the utility model, and are not limited to the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A corrosion-resistant high-pressure sealing joint for hydrogen energy pipelines, characterized by, The utility model provides external tube (1), the outer wall of external tube (1) is seted up with rotation groove (2), rotation groove (2) inside is provided with rotating ring (3), the inside fixed setting of rotating ring (3) is provided with connecting rod (4), the outer wall of connecting rod (4) is located at both ends of rotating ring (3) and is provided with outer thread (5), and the thread direction of outer thread (5) at both ends is opposite; Both ends of the outer tube (1) are fixedly provided with a closing plate (6), the closing plate (6) is rotatably connected with the connecting rod (4), and the inside of the closing plate (6) is provided with a through groove (7) close to the edge; The outer wall of the connecting rod (4) is sleeved with a threaded sleeve (8), and the threaded sleeve (8) is screwed with the outer thread (5), and the outer wall of the threaded sleeve (8) is provided with a closing structure (9).

2. The corrosion resistant high pressure sealing joint for hydrogen energy pipeline according to claim 1, characterized in that, The closing structure (9) comprises an outer expansion plate (91) sleeved on the outer wall of the threaded sleeve (8) and fixedly connected with the threaded sleeve (8), and the outer wall of the outer expansion plate (91) is fixedly provided with a plurality of closing plugs (92) corresponding to the through grooves (7).

3. The corrosion resistant high pressure sealing joint for hydrogen energy pipeline according to claim 2, characterized in that, The outer wall of the closing plug (92) is provided with a guide (93), the top end of the guide (93) is provided with a connecting groove (94), and the inside of the connecting groove (94) is slidably provided with a connecting guide rail (95) fixedly connected with the inner wall of the outer tube (1).

4. The corrosion resistant high pressure sealing joint for hydrogen energy pipeline according to claim 3, characterized in that, Both ends of the outer tube (1) are provided with a sealing snap ring (10).

5. The corrosion resistant high pressure sealing joint for hydrogen energy pipeline according to claim 4, characterized in that, The connecting part of the closing plate (6) and the connecting rod (4) is provided with a sealing bearing (11) fixedly connected with the connecting rod (4).

6. The corrosion resistant high pressure sealing joint for hydrogen energy pipeline according to claim 5, characterized in that, Both sides of the inside of the rotating ring (3) are provided with a rotating sealing ring (12) fitted with the inner wall of the outer tube (1).

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