Sealing structure for hydrogen conveying pipeline

Abstract

The utility model relates to the technical field of pipeline sealing, in particular to a sealing structure for a hydrogen conveying pipeline, which comprises a hydrogen conveying pipeline I, the device comprises a first hydrogen conveying pipeline, a second hydrogen conveying pipeline, a first connecting flange, a second connecting flange, a conical surface, a connecting ring, a conical groove, a sealing pipe, a sealing gasket, a push plate and a sealing ring, the right side of the first hydrogen conveying pipeline is connected with the first connecting flange, the right side of the first connecting flange is provided with the second hydrogen conveying pipeline, and the left side of the second hydrogen conveying pipeline is connected with the second connecting flange; conical surfaces are arranged on the outer sides of the connecting flange I and the connecting flange II; through the arrangement of the first connecting flange, the second connecting flange, the connecting ring, the push plate and the sealing ring, when the first hydrogen conveying pipeline and the second hydrogen conveying pipeline are connected, the push plate is matched with the sealing ring to play a preliminary sealing role, and the connecting ring can clamp the sealing gasket through the first connecting flange and the second connecting flange; and the sealing gasket can play a role in total sealing between the hydrogen conveying pipeline I and the hydrogen conveying pipeline II, and the mounting operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline sealing, in particular to a sealing structure for a hydrogen transmission pipeline. Background Art

[0002] A hydrogen pipeline is a pipeline system used to transport hydrogen. It consists of flexible pipes and is usually made of special materials to meet requirements such as high pressure, high temperature and high purity. Flexible hydrogen pipelines have certain expansion and bending capabilities and can adapt to the movement or deformation of the pipeline joints. When connecting the hydrogen pipelines, a sealing structure is required to seal the joints.

[0003] Some existing hydrogen transmission pipelines use sealing structures and adopt an inflatable cushion to seal the connection between the two pipelines. However, this connection method requires a valve to be set next to the pipeline to seal the gas inside the inflatable cushion, and the installation operation is relatively cumbersome.

[0004] Therefore, for some of the above-mentioned existing sealing structures for hydrogen pipelines, an inflatable cushion is used to seal the connection between the two pipelines. However, this connection method requires a valve to be set next to the pipeline to seal the gas inside the inflatable cushion, which is a relatively cumbersome installation operation. In this regard, a sealing structure for hydrogen pipelines can be designed. By setting a connecting flange 1, a connecting flange 2, a connecting ring, a push plate and a sealing ring, when the hydrogen pipeline 1 and the hydrogen pipeline 2 are connected, the push plate and the sealing ring can play a preliminary sealing role. The connecting ring can clamp the sealing gasket through the connecting flange 1 and the connecting flange 2. The sealing gasket can thus play a total sealing role between the hydrogen pipeline 1 and the hydrogen pipeline 2, and the installation operation is simple and convenient. Utility Model Content

[0005] In order to overcome the sealing structures of some existing hydrogen pipelines, an inflatable cushion is used to seal the connection between the two pipelines. However, this connection method requires a valve to be set next to the pipeline to seal the gas inside the inflatable cushion, which makes the installation operation more cumbersome.

[0006] The technical solution of the utility model is: a sealing structure for a hydrogen transmission pipeline, comprising a hydrogen transmission pipeline 1; also comprising a connecting flange 1, a connecting flange 2, a conical surface, a connecting ring, a conical groove, a sealing pipe, a sealing gasket, a push plate and a sealing ring, the right side of the hydrogen transmission pipeline 1 is connected to the connecting flange 1, the right side of the connecting flange 1 is provided with the hydrogen transmission pipeline 2, the left side of the hydrogen transmission pipeline 2 is connected to the connecting flange 2, the outer sides of the connecting flange 1 and the connecting flange 2 are both provided with conical surfaces, the outer sides of the connecting flange 1 and the connecting flange 2 are sleeved with two upper and lower connecting rings, the inner sides of the connecting rings are provided with conical grooves, the conical grooves and the conical surfaces match each other, the interiors of the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 are both connected with mounting plates, the interiors of the mounting plates are provided with sealing rings, the interiors of the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 are provided with sealing pipes, the outer sides of the sealing pipes are connected with sealing gaskets, the sealing gaskets are located between the connecting flange 1 and the connecting flange 2 on the left and right sides, the left and right sides of the sealing pipes are both provided with mounting grooves, the interior of the mounting groove is connected with a spring facing the side of the sealing gasket, and the other end of the spring is connected to the push plate.

[0007] Preferably, when connecting hydrogen pipeline 1 and hydrogen pipeline 2, first push the two sides of the sealing tube into hydrogen pipeline 1 and hydrogen pipeline 2, then put the upper and lower connecting rings on the outside of connecting flange 1 and connecting flange 2, and lock the upper and lower connecting rings. At this time, connecting flange 1 and connecting flange 2 are affected by the action of the conical groove on the conical surface so that they can move inward, and connecting flange 1 and connecting flange 2 can clamp the sealing gasket. At this time, the push plate can cooperate with the spring to press against the sealing ring, which can play a role of preliminary sealing, and the sealing gasket can cooperate with connecting flange 1 and connecting flange 2 to play a role of total sealing.

[0008] Preferably, two connecting plates are connected to the outer sides of the upper and lower connecting rings, and the two connecting plates are respectively located on the front and rear sides of the connecting rings.

[0009] Preferably, the two connecting plates on the front and rear sides are arranged in a one-to-one correspondence, and bolt 1 is arranged inside the two connecting plates on the front and rear sides.

[0010] Preferably, a first mounting hole is provided on the right side of the first connecting flange, and a second mounting hole is provided on the left side of the second connecting flange.

[0011] Preferably, six mounting holes 1 and six mounting holes 2 are provided, and the mounting holes 1 and the mounting holes 2 are arranged in a one-to-one correspondence, and bolts 2 are provided inside the mounting holes 1 and the mounting holes 2.

[0012] Preferably, six positioning rods are connected to the right side of the connecting flange 1, and six positioning holes are opened on the left side of the connecting flange 2.

[0013] Preferably, the positioning rods and the positioning holes are arranged in a one-to-one correspondence, and the positioning rods and the positioning holes are staggered with the first mounting hole and the second mounting hole respectively.

[0014] Beneficial effects of the utility model:

[0015] 1. By arranging connecting flange 1, connecting flange 2, conical surface, connecting ring, conical groove, sealing tube, sealing gasket, push plate and sealing ring, when connecting hydrogen transmission pipeline 1 and hydrogen transmission pipeline 2, first push the two sides of the sealing tube into hydrogen transmission pipeline 1 and hydrogen transmission pipeline 2, then put the upper and lower connecting rings on the outside of connecting flange 1 and connecting flange 2, and lock the upper and lower connecting rings. At this time, connecting flange 1 and connecting flange 2 are affected by the conical groove on the conical surface and can move inward. Connecting flange 1 and connecting flange 2 can clamp the sealing gasket. At this time, the push plate can cooperate with the spring to press against the sealing ring to play a preliminary sealing role. The sealing gasket can cooperate with connecting flange 1 and connecting flange 2 to play a total sealing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a sealing structure for a hydrogen transmission pipeline of the present invention;

[0017] Figure 2 Shown is a schematic diagram of a three-dimensional cross-sectional structure of a sealing structure for a hydrogen transmission pipeline of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the three-dimensional structure of a sealing pipe of a sealing structure for a hydrogen transmission pipeline of the present invention;

[0019] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the first and second connecting flanges of a sealing structure for a hydrogen transmission pipeline of the present invention;

[0020] Figure 5 The utility model shows a sealing structure for hydrogen transmission pipeline Figure 2 Enlarged structural diagram at point A in the middle.

[0021] Explanation of the accompanying symbols: 1. Hydrogen transmission pipeline 1; 2. Connecting flange 1; 3. Hydrogen transmission pipeline 2; 4. Connecting flange 2; 5. Conical surface; 6. Connecting ring; 7. Conical groove; 8. Sealing tube; 9. Sealing gasket; 10. Mounting groove; 11. Spring; 12. Push plate; 13. Mounting plate; 14. Sealing ring; 15. Connecting plate; 16. Bolt 1; 17. Mounting hole 1; 18. Mounting hole 2; 19. Positioning rod; 20. Positioning hole; 21. Bolt 2. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figure 1-Figure 5The utility model provides an embodiment: a sealing structure for a hydrogen transmission pipeline, comprising a hydrogen transmission pipeline 1; further comprising a connecting flange 1 2, a connecting flange 2 4, a conical surface 5, a connecting ring 6, a conical groove 7, a sealing tube 8, a sealing gasket 9, a push plate 12 and a sealing ring 14. The right side of the hydrogen transmission pipeline 1 is connected to the connecting flange 1 2, the right side of the connecting flange 1 2 is provided with a hydrogen transmission pipeline 2 3, the left side of the hydrogen transmission pipeline 2 3 is connected to the connecting flange 2 4, the outer sides of the connecting flange 1 2 and the connecting flange 2 4 are both provided with a conical surface 5, the outer sides of the connecting flange 1 2 and the connecting flange 2 4 are sleeved with two upper and lower connecting rings 6, the inner side of the connecting ring 6 is provided with a conical groove 7, the conical groove 7 and the conical surface 5 match each other, the interior of the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3 are both connected with a mounting plate 13, the interior of the mounting plate 13 is provided with a sealing ring 14, the interior of the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3 is provided with a sealing tube 8, and the outer side of the sealing tube 8 is connected with a sealing gasket 9 , the sealing gasket 9 is located between the connecting flange 1 2 and the connecting flange 2 4 on the left and right sides, and an installation groove 10 is provided on the left and right sides of the sealing tube 8. The inside of the installation groove 10 is connected to a spring 11 facing the side of the sealing gasket 9, and the other end of the spring 11 is connected to a push plate 12. When connecting the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3, first push the two sides of the sealing tube 8 into the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3, and then put the upper and lower connecting rings 6 on the outside of the connecting flange 1 and the connecting flange 2 4, and lock the upper and lower connecting rings 6. At this time, the connecting flange 1 and the connecting flange 2 4 are affected by the tapered groove 7 on the tapered surface 5 and can move inward. The connecting flange 1 and the connecting flange 2 4 can clamp the sealing gasket 9. At this time, the push plate 12 cooperates with the spring 11 to press against the sealing ring 14, which can play a preliminary sealing role. The sealing gasket 9 cooperates with the connecting flange 1 and the connecting flange 2 4 to play a total sealing role.

[0024] See also Figures 1-4 In this embodiment, two connecting plates 15 are connected to the outer sides of the upper and lower connecting rings 6, and the two connecting plates 15 are respectively located on the front and rear sides of the connecting ring 6. The two connecting plates 15 on the front and rear sides are arranged in a one-to-one correspondence. Bolts 16 are arranged inside the two connecting plates 15 on the front and rear sides. A mounting hole 17 is provided on the right side of the connecting flange 2, and a mounting hole 2 18 is provided on the left side of the connecting flange 2 4. There are six mounting holes 17 and six mounting holes 17 and six mounting holes 18. The mounting holes 17 and 18 are arranged in a one-to-one correspondence. Bolts 21 are arranged inside the mounting holes 17 and 18. The arrangement of the connecting plates 15 facilitates the use of bolts 16 to connect the upper and lower connecting rings 6. The arrangement of bolts 21 facilitates the connection between the connecting flange 2 and the connecting flange 2 4 through the mounting holes 17 and 18, thereby completing the connection and installation between the hydrogen pipeline 1 and the hydrogen pipeline 2 3.

[0025] See also Figure 4 In this embodiment, six positioning rods 19 are connected to the right side of the connecting flange 1 2, and six positioning holes 20 are opened on the left side of the connecting flange 2 4. The positioning rods 19 and the positioning holes 20 are arranged in a one-to-one correspondence. The positioning rods 19 and the positioning holes 20 are staggered with the mounting holes 17 and the mounting holes 2 18 respectively. The setting of the positioning rods 19 and the positioning holes 20 can play a positioning role between the connecting flange 1 2 and the connecting flange 2 4. When the positioning rods 19 on the connecting flange 1 2 are inserted into the positioning holes 20 on the connecting flange 2 4, the mounting holes 17 and the mounting holes 2 18 can be aligned one by one, thereby facilitating subsequent installation.

[0026] During the work, when installing between the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3, the sealing tube 8 is placed inside the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3, and the positioning rod 19 on the connecting flange 2 is inserted into the positioning hole 20 on the connecting flange 2 4. Then, the upper and lower connecting rings 6 are put on the outside of the connecting flange 1 2 and the connecting flange 2 4, and the upper and lower connecting rings 6 are connected and tightened with bolts 16. The connecting ring 6 can drive the connecting flange 1 2 and the connecting flange 2 4 to move inward through the tapered groove 7 and the tapered surface 5, and the connection is completed. The connecting flange 1 2 and the connecting flange 2 4 can clamp the sealing gasket 9, so that the sealing gasket 9 can play the role of primary sealing. At this time, the push plate 12 inside the sealing tube 8 cooperates with the spring 11 to press against the sealing ring 14, thereby playing the role of preliminary sealing. After the connecting ring 6 is connected and tightened, the personnel can use the bolt 21 to connect the connecting flange 1 2 and the connecting flange 2 4 again through the mounting hole 17 and the mounting hole 2 18, thereby further ensuring the strength of the connection between the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3.

[0027] Through the above steps, by setting the connecting flange 1 2, the connecting flange 2 4, the connecting ring 6, the push plate 12 and the sealing ring 14, when the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3 are connected, the push plate 12 cooperates with the sealing ring 14 to play a preliminary sealing role, and the connecting ring 6 can clamp the sealing gasket 9 through the connecting flange 1 2 and the connecting flange 2 4, so that the sealing gasket 9 can play a total sealing role between the hydrogen transmission pipeline 1 and the hydrogen transmission pipeline 2 3. The installation operation is simple and convenient, so as to solve the problem that some existing hydrogen transmission pipeline sealing structures use an inflatable cushion to seal the connection between the two pipelines, but this connection method requires a valve to be set next to the pipeline to seal the gas inside the inflatable cushion, and the installation operation is relatively cumbersome.

Claims

1. A sealing structure for a hydrogen transmission pipeline, comprising a hydrogen transmission pipeline (1); characterized in that: It also includes a connecting flange 1 (2), a connecting flange 2 (4), a conical surface (5), a connecting ring (6), a conical groove (7), a sealing tube (8), a sealing gasket (9), a push plate (12) and a sealing ring (14). The right side of the hydrogen transmission pipeline 1 (1) is connected to the connecting flange 1 (2), the right side of the connecting flange 1 (2) is provided with the hydrogen transmission pipeline 2 (3), the left side of the hydrogen transmission pipeline 2 (3) is connected to the connecting flange 2 (4), the outer sides of the connecting flange 1 (2) and the connecting flange 2 (4) are both provided with a conical surface (5), the outer sides of the connecting flange 1 (2) and the connecting flange 2 (4) are provided with two upper and lower connecting rings (6), and the inner sides of the connecting rings (6) are provided with a conical groove (7). The conical groove (7) matches the conical surface (5). The interiors of the hydrogen transmission pipeline 1 (1) and the hydrogen transmission pipeline 2 (3) are both connected with a mounting plate (13). A sealing ring (14) is provided inside the mounting plate (13). The interiors of the hydrogen transmission pipeline 1 (1) and the hydrogen transmission pipeline 2 (3) are both provided with a sealing tube (8). The outer side of the sealing tube (8) is connected with a sealing gasket (9). The sealing gasket (9) is located between the connecting flange 1 (2) and the connecting flange 2 (4) on the left and right sides. The left and right sides of the sealing tube (8) are both provided with mounting grooves (10). The interior of the mounting groove (10) is connected with a spring (11) on the side facing the sealing gasket (9). The other end of the spring (11) is connected with a push plate (12).

2. A sealing structure for a hydrogen transmission pipeline according to claim 1, characterized in that: The outer sides of the upper and lower connecting rings (6) are both connected to two connecting plates (15), and the two connecting plates (15) are respectively located at the front and rear sides of the connecting ring (6).

3. A sealing structure for a hydrogen transmission pipeline according to claim 2, characterized in that: The two connecting plates (15) on the front and rear sides are arranged in a one-to-one correspondence, and bolts (16) are arranged inside the two connecting plates (15) on the front and rear sides.

4. A sealing structure for a hydrogen transmission pipeline according to claim 1, characterized in that: The right side of the connecting flange 1 (2) is provided with a mounting hole 1 (17), and the left side of the connecting flange 2 (4) is provided with a mounting hole 2 (18).

5. A sealing structure for a hydrogen transmission pipeline according to claim 4, characterized in that: Six mounting holes (17) and six mounting holes (18) are provided, and the mounting holes (17) and the mounting holes (18) are arranged in a one-to-one correspondence. Bolts (21) are arranged inside the mounting holes (17) and the mounting holes (18).

6. The sealing structure for a hydrogen transmission pipeline according to claim 1, characterized in that: The right side of the connecting flange 1 (2) is connected with six positioning rods (19), and the left side of the connecting flange 2 (4) is provided with six positioning holes (20).

7. A sealing structure for a hydrogen transmission pipeline according to claim 6, characterized in that: The positioning rods (19) and the positioning holes (20) are arranged in a one-to-one correspondence, and the positioning rods (19) and the positioning holes (20) are respectively arranged in a staggered manner with the first mounting hole (17) and the second mounting hole (18).

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