A pipe integrated sealing device

Abstract

The application provides a pipeline integrated sealing device, which comprises a first sealing cylinder and a sealing assembly. The first sealing cylinder is provided with a first upper flange and a first lower flange on both sides, and is further provided with a fixed flange on one side. There are at least eight adjusting rods in the first sealing cylinder. The sealing assembly comprises a sealing piece and a second sealing cylinder. The sealing piece is provided with a first annular pad at one end. The sealing piece is sealed by being attached to the second sealing cylinder through the first annular pad. The outer wall of the other end of the sealing piece is provided with a wedge-shaped pad. The other end of the sealing piece is attached to the fixed flange through the wedge-shaped pad. The adjusting rods are adjusted to make the sealing piece tightly attached to the fixed flange through the wedge-shaped pad for sealing. The pipeline integrated gravity is used for tightly sealing, and multiple adjusting rods are used for tightly sealing at the same time. The sealing performance is not affected by the liquid hydrogen storage tank.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline sealing, in particular to a pipeline integrated sealing device. BACKGROUND

[0002] At present, the main form of hydrogen energy application in China is high-pressure gaseous hydrogen storage. Compared with the high-pressure gas storage hydrogen supply mode, the low-temperature liquid storage hydrogen supply mode, i.e. the liquid hydrogen storage hydrogen supply mode, has the advantages of high hydrogen storage ratio, low transportation cost, high gasification purity, low storage and transportation pressure, and high safety in use, which can effectively control the comprehensive cost.

[0003] When liquid hydrogen is transported into a liquid hydrogen storage or transported from a liquid hydrogen storage to the outside for use, the liquid hydrogen will evaporate due to its low temperature state. In order to improve the safety of liquid hydrogen storage and reduce the leakage rate of the storage, the storage must be effectively sealed.

[0004] Most of the large-capacity liquid hydrogen storage tanks are divided into a lower liquid storage part and a dome head part by a film. The corresponding pipeline integration is required for the entry and exit of liquid hydrogen. In order to facilitate disassembly and maintenance and to ensure that the liquid hydrogen storage tank is not affected by stress, the pipeline is usually integrated in the center of the top of the cylindrical liquid hydrogen storage tank. The pipeline integration needs to pass through the film of the liquid storage part and the dome head part. Due to the combined action of hydrogen pressure, self-weight of the tank body and liquid hydrogen environmental cold shrinkage on the top of the liquid hydrogen storage, the deformation of the parts is large, thereby affecting the sealing effect. SUMMARY

[0005] In order to solve the problem of reduced sealing effect when the parts are affected by the liquid hydrogen storage, the present application provides a pipeline integrated sealing device.

[0006] The present application is realized by the following technical scheme:

[0007] The present application provides a pipeline integrated sealing device comprising a first sealing cylinder and a sealing assembly, wherein:

[0008] The first sealing cylinder is provided with a first upper flange and a first lower flange on both sides, one side of the first sealing cylinder is fixedly connected with the first lower flange, and the other side is fixedly connected with the first upper flange. At least eight adjusting rods are arranged on the inner side of the first sealing cylinder, the adjusting rods penetrate through the first upper flange and extend into the first sealing cylinder, and the adjusting rods are movably connected with the first upper flange and the first lower flange. The first sealing cylinder is also provided with a fixed flange on one side;

[0009] The sealing assembly comprises a sealing piece and a second sealing cylinder, one end of the sealing piece is provided with a first annular gasket, the sealing piece is sealed by the first annular gasket and the second sealing cylinder, the outer wall of the other end of the sealing piece is provided with a wedge-shaped gasket, the other end of the sealing piece is sealed by the wedge-shaped gasket and the fixed flange, and the sealing piece is pressed and sealed to the fixed flange by the wedge-shaped gasket through the adjustment of the adjusting rod.

[0010] Further, the sealing assembly further comprises a third sealing cylinder, the number of the third sealing cylinder is same as that of the adjusting rod, and the third sealing cylinder is fixedly connected with the first upper flange.

[0011] Further, the sealing assembly further comprises a second lower flange, a first fixing piece and a second upper flange, one side of the second lower flange is fixedly connected with the third sealing cylinder, the other side of the second lower flange is provided with the second upper flange, and the first fixing piece penetrates through the second lower flange and the second upper flange and fixedly connects the second lower flange and the second upper flange.

[0012] Further, a second annular gasket is arranged between the second upper flange and the second lower flange, and the second upper flange and the second lower flange are fixed and press the second annular gasket to seal.

[0013] Further, a connecting flange is arranged on the outer wall of the side close to the first lower flange of the first sealing cylinder, the connecting flange is fixedly connected with the first sealing cylinder, and the fixed flange is fixedly connected with the connecting flange through a second fixing piece.

[0014] Further, a sealing sleeve is arranged on the inner wall of the side close to the first upper flange of the first sealing cylinder, and the sealing sleeve is fixed with the first sealing cylinder.

[0015] The beneficial effects of the present application are as follows:

[0016] (1) The sealing device integrated with the pipeline of the present application is pressed by the plurality of adjusting rods, so that the sealing piece is pressed and the wedge-shaped gasket is sealed and fixed to the fixed flange, the first sealing gasket is pressed and tightly adheres to the second sealing cylinder to complete the sealing under the cooperation of the gravity of the pipeline integration, and the sealing is not affected by the internal liquid hydrogen storage to cause the sealing performance to be reduced.

[0017] (2) The sealing device integrated with the pipeline of the present application provides a sealing cavity for the sealing place of the adjusting rod through the third sealing cylinder, and the third sealing cylinder is sealed by the second upper flange and the second upper flange, so as to prevent the leakage of the thread of the adjusting rod, the second upper flange and the second lower flange are two-stage sealed, and finally the adjusting rod can be more conveniently adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall structure sectional view of the sealing device integrated with the pipeline of the present application;

[0019] Figure 2 The partial enlarged view of A of Figure 1

[0020] Figure 3 The partial enlarged view of B of Figure 1

[0021] In the figure: the first upper flange 1, the first fixing part 2, the first sealing cylinder 3, the first lower flange 4, the second upper flange 5, the second sealing cylinder 6, the second annular gasket 7, the second lower flange 8, the third sealing cylinder 9, the adjusting rod 10, the wedge-shaped gasket 11, the sealing sleeve 12, the connecting flange 13, the sealing part 14, the first annular gasket 15, the fixing flange 16, the second fixing part 17.

[0022] The purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0023] In order to more clearly and completely illustrate the technical solutions of the present application, the present application will be further described below with reference to the accompanying drawings.

[0024] Please refer to Figures 1-3 The present application provides a sealing device integrated with a pipeline, which comprises a first sealing cylinder 3 and a sealing assembly, wherein:

[0025] The first sealing cylinder 3 is provided with a first upper flange 1 and a first lower flange 4 on both sides, and is fixedly connected with the first lower flange 4 on one side and the first upper flange 1 on the other side. The inner side of the first sealing cylinder 3 is provided with at least eight adjusting rods 10, which penetrate through the first upper flange 1 and extend into the interior of the first sealing cylinder 3. The adjusting rods 10 are movably connected with the first upper flange 1 and the first lower flange 4. The first sealing cylinder 3 is also provided with a fixing flange 16 on one side.

[0026] The sealing assembly comprises a sealing part 14 and a second sealing cylinder 6. The sealing part 14 is provided with a first annular gasket 15 at one end, and is sealed by being attached to the second sealing cylinder 6 through the first annular gasket 15. The outer wall of the other end of the sealing part 14 is provided with a wedge-shaped gasket 11, and the other end of the sealing part 14 is attached to the fixing flange 16 through the wedge-shaped gasket 11. The adjusting rods 10 are adjusted to press and tightly attach the fixing flange 16 through the wedge-shaped gasket 11 to achieve sealing.

[0027] In the present embodiment:

[0028] The first upper flange 1 and the first lower flange 4 are used to fix the integrated pipeline, and at the same time provide a structure for adjusting the adjusting rods 10; ​​

[0029] The fixed flange 16 is used to limit one end of the sealing member 14 inside the first sealing cylinder 3;

[0030] The first sealing cylinder 3 is used to provide a cavity structure for sealing;

[0031] The adjusting rod 10 is used to adjust and fix the sealing member 14, while supporting the first sealing cylinder 3;

[0032] The sealing member 14 is used to seal the fixed flange 16 and the second sealing cylinder 6;

[0033] The second sealing cylinder 6 is used to provide a connecting structure for the boundary film layer;

[0034] The first annular gasket 15 and the wedge-shaped gasket 11 are used to improve the sealing effect;

[0035] Specifically, the inner side of the first upper flange 1 and the first lower flange 4 is provided with a pipeline for conveying gas, the adjusting rod 10 can be adjusted and moved in the linear direction of the first upper flange 1 and the first lower flange 4, the outer side of the sealing member 14 is connected with the boundary film layer, the boundary film layer is located in the liquid hydrogen tank and divides the liquid hydrogen tank into a liquid storage cavity side and a dome head cavity side, the sealing member 14 is welded with the boundary film of the liquid hydrogen tank, so that the sealing member 14 is sealingly connected with the liquid hydrogen tank, the first sealing cylinder 3 and the fixed flange 16 form a limiting structure, one end of the sealing member 14 is limited inside the first sealing cylinder 3, the wedge-shaped gasket 11 is arranged between the sealing member 14 and the fixed flange 16, then the adjusting rod 10 is adjusted and pressed to the inner side of the fixed flange 16, while extruding the wedge-shaped gasket 11, the wedge-shaped gasket 11 is deformed to seal, and the gravity of the pipeline integration extrudes the first annular gasket 15 to cooperate with the second sealing cylinder 6 to seal.

[0036] Further, the sealing assembly further comprises a third sealing cylinder 9, the number of the third sealing cylinder 9 is the same as that of the adjusting rod 10, and the third sealing cylinder 9 is fixedly connected with the first upper flange 1.

[0037] In the embodiment:

[0038] The third sealing cylinder 9 is used to provide a cavity structure for sealing the adjusting rod 10 and the first upper flange 1;

[0039] Specifically, the third sealing cylinder 9 is fixed on the first upper flange 1 by welding, and the third sealing cylinder 9 and the first upper flange 1 form a semi-sealed cavity, and the gap between the adjusting rod 10 and the first upper flange 1 is sealed by sealing the semi-sealed cavity.

[0040] Further, the sealing assembly further comprises a second lower flange 8, a first fixing member 2 and a second upper flange 5, one side of the second lower flange 8 is fixedly connected with the third sealing cylinder 9, the other side of the second lower flange 8 is provided with the second upper flange 5, the first fixing member 2 penetrates through the second lower flange 8 and the second upper flange 5 and fixedly connects the second lower flange 8 and the second upper flange 5.

[0041] In the embodiment,

[0042] The second lower flange 8 and the second upper flange 5 are used for sealing the third sealing cylinder 9 to seal the gap between the adjusting rod 10 and the first upper flange 1.

[0043] Specifically, the second lower flange 8 is fixedly connected with the third sealing cylinder 9 by welding, and the space inside the third sealing cylinder 9 is sealed by the second flange and the third flange, so that the gap between the adjusting rod 10 and the first upper flange 1 is sealed.

[0044] Further, the second upper flange 5 and the second lower flange 8 are provided with a second annular gasket 7, and the second upper flange 5 and the second lower flange 8 are fixed and press the second annular gasket 7 to seal.

[0045] In the embodiment,

[0046] The second annular gasket 7 is used to improve the sealing effect.

[0047] Specifically, the second annular gasket 7 is located between the second lower flange 8 and the second upper flange 5, and when the second upper flange 5 and the second lower flange 8 are pressed and fixed, the second annular gasket 7 is extruded, thereby improving the sealing effect between the second lower flange 8 and the second upper flange 5.

[0048] Further, the first sealing cylinder 3 is provided with a connecting flange 13 on the outer wall close to the first lower flange 4, the connecting flange 13 is fixedly connected with the first sealing cylinder 3, and the fixed flange 16 is fixedly connected with the connecting flange 13 through the second fixing member 17.

[0049] In the embodiment,

[0050] The connecting flange 13 is used to provide a connecting structure for the fixed flange 16 and the first sealing cylinder 3.

[0051] Specifically, the connecting flange 13 is welded on the outer wall of the first sealing cylinder 3, and the fixed flange 16 is fixed on one side of the first sealing cylinder 3 through the connecting flange 13, which makes it more convenient to disassemble and install the fixed flange 16, one end of the sealing member 14 is placed in the first sealing cylinder 3, and then the fixed flange 16 is fixed on the connecting flange 13, so that the sealing member 14 is limited in the first sealing cylinder 3.

[0052] Further, the first sealing cylinder 3 is provided with a sealing sleeve 12 on the inner wall of the side close to the first upper flange 1, and the sealing sleeve 12 is fixed with the first sealing cylinder 3.

[0053] In the embodiment,

[0054] The sealing sleeve 12 is used to improve the contact sealing with the wedge-shaped gasket 11.

[0055] Specifically, the sealing sleeve 12 can prevent the first sealing cylinder 3 from having precision errors with the wedge-shaped gasket 11, so that the wedge-shaped part is too small to be compressed and sealed.

[0056] In summary, in the specific implementation, taking liquid hydrogen as an example, the first upper flange 1 is connected to the top of the liquid hydrogen tank and is sealed with the liquid hydrogen tank through the sealing gasket, the first lower flange 4 is on the side of the liquid hydrogen tank, the first annular gasket 15 is deformed and sealed under the gravity of the first sealing cylinder 3, the pipeline and other components, the wedge-shaped gasket 11 is deformed and sealed under the pressure of the adjusting rod 10, the gas evaporated in the liquid hydrogen tank is not easy to enter the side of the dome head cavity under the sealing of the first annular gasket 15 and the wedge-shaped gasket 11, a small part of hydrogen gas leaks into the first sealing cylinder 3 through the gap between the first lower flange 4 and the connected pipeline, and the higher the temperature is when entering the upper part of the first sealing cylinder 3, and when reaching the first upper flange 1, the gas is warmed to normal temperature, and then the second upper flange 5, the second lower flange 8 and the second annular gasket 7 are used to seal the threads of the first upper flange 1, so that the evaporated gas hydrogen in the tank body cannot leak.

[0057] Of course, the present application can have other various embodiments, and based on the embodiment, other embodiments obtained by those skilled in the art without any creative labor belong to the scope of protection of the present application.

Claims

1. A pipe integrated sealing device, characterized by, The first sealing cylinder and the sealing assembly are included, wherein: The first sealing cylinder is provided with a first upper flange and a first lower flange on both sides, respectively, and is fixedly connected with the first lower flange on one side and the first upper flange on the other side, and is provided with at least eight adjusting rods on the inner side, the adjusting rods penetrating through the first upper flange and extending into the first sealing cylinder, and the adjusting rods are movably connected with the first upper flange and the first lower flange, and the first sealing cylinder is further provided with a fixed flange on one side; The sealing assembly includes a sealing element and a second sealing cylinder, the sealing element is provided with a first annular pad at one end, the sealing element is sealed by being attached to the second sealing cylinder through the first annular pad, and a wedge-shaped pad is arranged on the outer wall of the other end of the sealing element, the other end of the sealing element is attached to the fixed flange through the wedge-shaped pad, and the adjusting rods are adjusted to press the sealing element against the fixed flange through the wedge-shaped pad to seal.

2. The conduit-integrated sealing device of claim 1, wherein, The sealing assembly further includes a third sealing cylinder, the number of the third sealing cylinder is the same as that of the adjusting rods, and the third sealing cylinder is fixedly connected with the first upper flange.

3. The conduit-integrated sealing device of claim 2, wherein, The sealing assembly further includes a second lower flange, a first fixing element and a second upper flange, one side of the second lower flange is fixedly connected with the third sealing cylinder, the other side of the second lower flange is provided with the second upper flange, and the first fixing element penetrates through the second lower flange and the second upper flange and fixedly connects the second lower flange and the second upper flange.

4. The conduit-integrated sealing device of claim 3, wherein, A second annular pad is arranged between the second upper flange and the second lower flange, and the second upper flange and the second lower flange are fixed and press the second annular pad to seal.

5. The conduit-integrated sealing device of claim 1, wherein, A connecting flange is arranged on the outer wall of the side of the first sealing cylinder close to the first lower flange, the connecting flange is fixedly connected with the first sealing cylinder, and the fixed flange is fixedly connected with the connecting flange through a second fixing element.

6. The conduit-integrated sealing device of claim 1, wherein, A sealing sleeve is arranged on the inner wall of the side of the first sealing cylinder close to the first upper flange, and the sealing sleeve is fixed with the first sealing cylinder.

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