CN214840120U - Full-immersed totally-enclosed safe hydrogen delivery pressure pipeline - Google Patents
Full-immersed totally-enclosed safe hydrogen delivery pressure pipeline Download PDFInfo
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- CN214840120U CN214840120U CN202023038498.0U CN202023038498U CN214840120U CN 214840120 U CN214840120 U CN 214840120U CN 202023038498 U CN202023038498 U CN 202023038498U CN 214840120 U CN214840120 U CN 214840120U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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Abstract
A full-immersed totally-enclosed safe hydrogen delivery pressure pipeline comprises a hydrogen delivery pipeline, wherein the hydrogen delivery pipeline is arranged in a water storage pipeline, and a liquid medium is filled between the hydrogen delivery pipeline and the water storage pipeline; a gas observation window is arranged at the top of the water storage pipeline and is connected with the hydrogen discharge device; and an image monitoring device is arranged above the gas observation window and used for monitoring gas signals in the gas observation window. The utility model discloses utilize anaerobic environment under water to realize the transport of hydrogen, avoid hydrogen to leak the air immediately, improved the security of defeated hydrogen pipeline. The visual monitoring of gas leakage can be realized through the image monitoring equipment, and the maintenance efficiency of workers is improved.
Description
Technical Field
The utility model belongs to the technical field of water conservancy water and electricity electromechanics, more specifically say a totally closed safe hydrogen transfer pipeline of formula that soaks entirely.
Background
According to the technical code for safety of hydrogen use GB4962-2008, a hydrogen transportation system using a gas pipeline, the pipeline should have a series of measures for preventing gas leakage, such as preventing leakage, periodically detecting gas leakage, etc., wherein the key requirements are as follows:
1. the hydrogen equipment should be strictly prevented from leaking, the sealing of parts such as instruments and valves used should be ensured to be good, the parts of the equipment where the hydrogen leaks should be timely treated by regular inspection.
2. When the gas leakage inspection is carried out on the connection points of hydrogen equipment, pipelines, valves and the like, a neutral soapy water or portable combustible gas detection alarm instrument is used, and the gas leakage inspection by using open fire is forbidden. The portable combustible gas detection alarm should be checked regularly.
3. The hydrogen pipeline is a seamless metal pipeline, a cast iron pipeline is forbidden, and the connection on the pipeline is welded or other connection modes for effectively preventing hydrogen leakage. The valve on the pipeline adopts a ball valve and a stop valve.
At present, the field of hydrogen transportation adopts a medium-pressure/high-pressure pipeline to transport hydrogen more conventionally, and is a special line construction.
When the pipeline is adopted to convey hydrogen, the following problems exist:
(1) due to the small hydrogen molecules, there is a diffusion loss of hydrogen gas at the junction of the pipes. Hydrogen diffusion losses are currently about 3 times that of natural gas.
(2) Hydrogen molecules are easily adsorbed in the metal pipe material, resulting in hydrogen embrittlement, resulting in increased local leakage.
(3) Once the hydrogen leaks into the air, and the external space is a sealed space which is not easy to diffuse, the hydrogen is colorless and tasteless; and the practical industrial application has higher requirements on the purity of the hydrogen, and other gases are not suitable to be added so that the transported gas is locally visible and audible, so that workers are difficult to quickly find leakage points for overhauling.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a totally closed safe hydrogen pipeline of defeated of formula that soaks entirely, with relevant equipment as for under water to realize many-sided functions such as visual monitoring gas leakage, hydrogen energy intelligence evacuation.
In order to achieve the above object, the utility model adopts the following technical scheme:
the full-immersed totally-enclosed safe hydrogen delivery pressure pipeline comprises a hydrogen delivery pipeline, wherein the hydrogen delivery pipeline is arranged in water storage pipelines, and liquid media are filled between the water storage pipelines of the hydrogen delivery pipeline.
Further, a gas observation window is arranged at the top of the water storage pipeline and connected with the hydrogen exhaust device.
Furthermore, an image monitoring device is arranged above the gas observation window and used for monitoring gas signals in the gas observation window.
Further, an exhaust valve is arranged on the hydrogen exhaust device.
Furthermore, a water compartment is arranged in the water storage pipeline and used for isolating the water storage pipeline in sections.
Furthermore, each water compartment is provided with at least one gas observation window.
Further, the liquid medium is water.
Further, the eccentricity between the hydrogen delivery pipeline and the water storage pipeline is not more than 5%.
Furthermore, the water storage pipeline is a metal pipe, a PVC pipe or a transparent pipe.
The utility model has the advantages that:
one of them, the utility model discloses utilize anaerobic environment to realize the transport of hydrogen under water, through the sealed hydrogen transmission pipeline of water pressure, can reduce the leakage of hydrogen.
Secondly, when the hydrogen conveying pipeline leaks, leaked hydrogen can be discharged after being gathered to the gas observation window, so that the hydrogen can be prevented from leaking to the air immediately, and the safety of the hydrogen conveying pipeline is further improved.
And thirdly: visual monitoring of gas leakage can be achieved through the image monitoring equipment, a worker can conveniently find a leakage section quickly, and maintenance efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a fully-immersed totally-enclosed safe hydrogen delivery pressure pipeline.
Wherein: 1 hydrogen conveying pipeline, 2 water storage pipelines, 3 water compartments, 4 valves, 5 flanges, 6 gas observation windows, 7 emptying valves, 8 hydrogen discharging devices, 9 image monitoring equipment and 10 liquid media.
Detailed Description
The invention will be further described in detail with reference to the drawings and the following detailed description, which are provided for the purpose of clearly understanding the invention and are not intended to limit the invention.
As shown in fig. 1, the fully-immersed totally-enclosed safe hydrogen delivery pressure pipeline comprises a hydrogen delivery pipeline 1, wherein the hydrogen delivery pipeline 1 is arranged in a water storage pipeline 2, a liquid medium 10 is filled between the water storage pipelines 2 of the hydrogen delivery pipeline 1, and the liquid medium 10 is water.
The top of the water storage pipeline 2 is provided with a gas observation window 6, the gas observation window 6 is connected with a hydrogen exhaust device 8, and the hydrogen exhaust device 8 is provided with an exhaust valve 7. The hydrogen discharging device 8 and the emptying valve 7 are used for discharging leaked gas in the gas observation window 6 to an outdoor dispersion space, so that the leaked hydrogen is safely discharged.
An image monitoring device 9 is arranged above the gas observation window 6 and used for monitoring a gas signal in the gas observation window 6, so that gas leakage can be monitored and observed.
The hydrogen conveying pipeline 1 is a conventional medium-pressure/high-pressure hydrogen conveying pipeline and is used for conveying hydrogen. The metal pipe is adopted, and relevant requirements need to meet relevant standards and regulations such as GB4962 + 2008 'technical code for hydrogen use safety'. The hydrogen pipeline 1 is provided with a valve 4, and the valve 4 is a ball valve, a stop valve and the like of a common hydrogen pipeline. The different hydrogen conveying pipelines 1 are connected by flanges 5.
The water storage pipeline 2 and the hydrogen delivery pipeline 1 are filled with water, the water storage pipeline 2 and the hydrogen delivery pipeline 1 are concentric devices, and the eccentricity is not more than 5%. The water storage pipeline 2 can be made of metal pipes, PVC pipes or other transparent pipes, but the water in the water storage pipeline is required to be prevented from overflowing and leaking.
The water compartment 3 is used for separating water compartments of different valves, flanges or other pipeline connecting and adjusting structures. The main functions are as follows: 1) the concentricity of the water storage pipeline and the hydrogen conveying pipeline 1 caused by the overlong water storage pipeline 2 can not be ensured, and the concentricity of the water storage pipeline and the hydrogen conveying pipeline at different sections can be ensured by utilizing a water compartment; 2) the reliability of the water storage pipeline 2 is low due to the fact that the length of the water storage pipeline is too long, and the reliability of the whole system is further influenced; 3) the collection and distribution of leaked hydrogen are controlled, the leakage scale is reduced, and the monitoring sensitivity is improved. At least one gas observation window 6 is arranged on each water compartment 3.
The gas observation window 6 adopts transparent and visible pipes, such as organic glass, acrylic and the like, and has the main functions of: 1) collecting hydrogen gas leakage of the corresponding section of hydrogen conveying pipeline; 2) observing hydrogen leakage of the corresponding section of pipeline, valve or flange; 3) the leakage hydrogen is exhausted by the combined action of the air exhaust valve and the air exhaust valve; 4) And providing a video monitoring window for the image monitoring equipment.
When the hydrogen leakage occurs in the hydrogen conveying pipeline 1, the leaked gas is gathered in the gas observation window 6, the leaked hydrogen forms a series of bubbles in water, and the image monitoring equipment 9 detects the motion track of the bubbles in the water to remind operation and maintenance personnel of paying attention to the state of the equipment. After a certain period of time, the evacuation valve 7 is opened and the hydrogen discharge device 8 discharges the leaking hydrogen gas.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (9)
1. The full-immersed totally-enclosed safe hydrogen delivery pressure pipeline is characterized by comprising a hydrogen delivery pipeline (1), wherein the hydrogen delivery pipeline (1) is arranged in a water storage pipeline (2), and a liquid medium (10) is filled between the hydrogen delivery pipeline (1) and the water storage pipeline (2).
2. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline as claimed in claim 1, wherein: the top of the water storage pipeline (2) is provided with a gas observation window (6), and the gas observation window (6) is connected with a hydrogen discharge device (8).
3. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline as claimed in claim 2, characterized in that: and an image monitoring device (9) is arranged above the gas observation window (6) and is used for monitoring gas signals in the gas observation window (6).
4. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline as claimed in claim 2, characterized in that: and an exhaust valve (7) is arranged on the hydrogen exhaust device (8).
5. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline as claimed in claim 1, wherein: set up water compartment (3) in water storage pipeline (2) for with water storage pipeline (2) segmentation isolation.
6. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline according to claim 5, characterized in that: at least one gas observation window (6) is arranged on each water compartment (3).
7. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline as claimed in claim 1, wherein: the liquid medium (10) is water.
8. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline as claimed in claim 1, wherein: the eccentricity between the hydrogen delivery pipeline (1) and the water storage pipeline (2) is not more than 5%.
9. The fully-immersed fully-closed safe hydrogen conveying pressure pipeline as claimed in claim 1, wherein: the water storage pipeline (2) is made of metal pipes, PVC pipes or transparent pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023038498.0U CN214840120U (en) | 2020-12-16 | 2020-12-16 | Full-immersed totally-enclosed safe hydrogen delivery pressure pipeline |
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| CN202023038498.0U CN214840120U (en) | 2020-12-16 | 2020-12-16 | Full-immersed totally-enclosed safe hydrogen delivery pressure pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11774044B1 (en) | 2022-03-29 | 2023-10-03 | Zhejiang University | Composite pipeline for transporting hydrogen and method for monitoring hydrogen leakage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11774044B1 (en) | 2022-03-29 | 2023-10-03 | Zhejiang University | Composite pipeline for transporting hydrogen and method for monitoring hydrogen leakage |
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