CN214405605U - Hydrogen storage system and hydrogenation station - Google Patents
Hydrogen storage system and hydrogenation station Download PDFInfo
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- CN214405605U CN214405605U CN202022317621.6U CN202022317621U CN214405605U CN 214405605 U CN214405605 U CN 214405605U CN 202022317621 U CN202022317621 U CN 202022317621U CN 214405605 U CN214405605 U CN 214405605U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a hydrogen storage system and hydrogenation station, hydrogen storage system includes: a hydrogen storage tank for storing hydrogen; an external pipeline connected to the hydrogen storage tank for delivering hydrogen to the outside; the hydrogen storage tank is characterized in that a pressure detection device and a safety valve are arranged on the external pipeline, and a valve for controlling the on-off or isolation of the hydrogen storage tank from the outside is arranged on the external pipeline among the hydrogen storage tank, the pressure detection device and the safety valve. The multi-channel control valves are arranged on the external pipeline connected with the hydrogen storage tank, so that the switching times of the root valves of the hydrogen storage tank can be reduced during maintenance, and the reliability of each valve is ensured; the valve is arranged on an external pipeline between the hydrogen storage tank, the pressure detection device and the safety valve, and the pressure of the hydrogen storage tank can be monitored by the pressure detection device in real time by controlling the opening and closing of the valve when the safety valve is overhauled, so that the safety of the hydrogen storage system is improved.
Description
Technical Field
The utility model relates to a hydrogenation station technical field especially relates to a hydrogen storage system and hydrogenation station.
Background
The fixed hydrogenation station is composed of a compressor system, a hydrogen storage tank system and a hydrogenation machine system, and a certain number of hydrogen storage tanks are generally required to be configured in order to ensure the stable operation of the hydrogenation station. In general, a single valve (called a "root valve" for short) is arranged at the root of a hydrogen storage tank of a hydrogen station and used for isolating the storage tank from an external pipeline, and the root valve is in a normally open state in a normal working state of the hydrogen station.
When the hydrogenation station system overhauls or checks the safety valve and the pressure gauge, the root valve needs to be closed. However, since the storage tank pressure of the hydrogen filling station is generally in a high-pressure state of 45MPa or 87.5MPa, after the root valve is closed for a certain number of times in the high-pressure state, the sealing performance of the root valve is easily deteriorated, and phenomena such as valve abrasion and failure can occur, so that the root valve of the hydrogen storage tank has problems such as internal leakage or incomplete closing. At this time, the hydrogen storage tank and the external pipeline cannot be effectively isolated, so that the pressure gauge and the safety valve cannot be subjected to offline verification, and the root valve needs to be replaced by overhaul in an emergency state. When the root valve is replaced during overhaul, hydrogen in the hydrogen storage tank needs to be completely emptied, so that great economic loss can be caused. In addition, when the hydrogen station system overhauls or checks the safety valve and the pressure gauge, the pressure of the hydrogen storage tank cannot be monitored at the moment because the root valve is in a closed state, and potential safety hazards also exist.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a hydrogen storage system can ensure the reliability of valve to under the relief valve check-up state, real-time pressure that can monitoring system.
The utility model provides a hydrogen storage system, include:
a hydrogen storage tank for storing hydrogen;
an external pipeline connected to the hydrogen storage tank for delivering hydrogen to the outside;
and a valve for controlling the on-off of the hydrogen storage tank and the outside is arranged on the external pipeline among the hydrogen storage tank, the pressure detection device and the safety valve.
Further, the valve includes a first valve provided between the hydrogen gas storage tank and the pressure detection device, and a second valve provided between the pressure detection device and the relief valve.
Further, the pressure detection device includes a pressure detection element, and a third valve connected between the pressure detection element and the external line.
Further, the hydrogen storage system further comprises a control device, and the second valve and the third valve are both electrically connected with the control device.
Further, the valve further comprises a fourth valve disposed downstream of the safety valve, and the safety valve is detachably verified by simultaneously closing the second valve and the fourth valve.
Further, the first valve, the second valve, the third valve and the fourth valve are needle valves or ball valves.
Further, the third valve is a ball valve.
Further, the fourth valve is one of a needle valve and a ball valve, and the second valve is the other of the needle valve and the ball valve.
Further, the pressure detection element is a pressure gauge and/or a pressure transmitter.
The utility model also provides a hydrogenation station including above-mentioned hydrogen storage system.
The hydrogen storage system in the utility model can reduce the switching times of the hydrogen storage tank root valve during maintenance by installing the multi-channel control valve on the external pipeline connected with the hydrogen storage tank, thereby ensuring the reliability of each valve; the valve is arranged on an external pipeline between the hydrogen storage tank, the pressure detection device and the safety valve, and the pressure of the hydrogen storage tank can be monitored by the pressure detection device in real time by controlling the opening and closing of the valve when the safety valve is overhauled, so that the safety of the hydrogen storage system is improved.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 is a schematic structural diagram of the hydrogen storage system of the present invention.
In the figure: 1-hydrogen storage tank, 2-external pipeline, 21-first valve, 22-second valve, 23-fourth valve, 3-pressure detection device, 31-pressure transmitter, 32-pressure gauge, 33-third valve and 4-safety valve.
In the drawings, like parts are designated with like reference numerals, and the drawings are not to scale.
Detailed Description
For the purpose of clearly illustrating the inventive content of the present invention, the present invention will be described with reference to the following embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1
As shown in fig. 1, the present invention provides a hydrogen storage system, including: the hydrogen storage tank 1 is used for storing hydrogen, the hydrogen storage tank 1 is connected with an external pipeline 2 used for conveying hydrogen to the outside, and the external pipeline 2 is provided with a valve used for controlling the connection and disconnection between the hydrogen storage tank 1 and the outside.
Be provided with pressure measurement 3 and relief valve 4 on external pipeline 2, the valve is installed between hydrogen storage tank 1, pressure measurement 3 and relief valve 4, and the real-time pressure that makes pressure measurement 3 monitor hydrogen storage tank 1 when relief valve 4 overhauls is used for opening and close through control flap.
The utility model discloses in through setting up the multichannel valve, the switch number of times of valve when only setting up a root valve on having reduced outside pipeline 2, guaranteed the reliability of valve, avoided because of the interior hourglass or unable thorough shutdown scheduling problem that appears of 1 root valve of hydrogen storage tank that valve wearing and tearing and trouble lead to.
The valve arranged on the external pipeline 2 in the utility model specifically comprises a first valve 21 between the hydrogen storage tank 1 and the pressure detection device 3, the valve plays the role of a root valve of the hydrogen storage tank 1, and the first valve 21 is in an open state to provide hydrogen for the outside during normal operation; the second valve 22 is arranged on the external pipeline 2 between the pressure detection device 3 and the safety valve 4, when the hydrogen storage tank 1 works normally, the first valve 21 and the second valve 22 are both in an open state, and when an emergency occurs or the hydrogen station needs to be overhauled, the first valve 21 and the second valve 22 are closed, so that the hydrogen storage tank 1 is isolated from the outside.
The pressure detection device 3 in this embodiment includes a pressure detection element, and a third valve 33 connected between the pressure detection element and the external line 2, and the third valve 33 is specifically a root valve of the pressure detection element. When the hydrogen storage tank 1 is in normal operation and the pressure of the external pipeline 2 and the hydrogen storage tank 1 does not need to be monitored, the third valve 33 is in a closed state; when the safety valve 4 is to be repaired and the real-time pressure of the hydrogen storage tank 1 needs to be indirectly monitored by the pressure detecting element connected to the external line 2, the third valve 33 is in an open state.
When the safety valve 4 is overhauled, the first valve 21 is in an open state, the second valve 22 is closed to realize the isolation of the hydrogen storage tank 1 from the outside, and the third valve 33 is in an open state, so that the pressure detection element is communicated with the hydrogen storage tank 1 through the external pipeline 2, and the pressure of the hydrogen storage tank 1 is monitored in real time in an indirect mode.
The hydrogen storage system in this embodiment further includes a control device, the second valve 22 and the third valve 33 are both electrically connected to the control device, preferably, an interlock control is provided between the second valve 22 and the third valve 33, and the interlock control is incorporated into the control device, and when the second valve 22 is closed, the third valve 33 is automatically opened, so as to improve the reliability and stability of the pressure detection device 3 for monitoring the system pressure.
A fourth valve 23 is further provided on the external line 2 downstream of the safety valve 4, and the safety valve 4 can be detached from the external line 2 for off-line verification by closing the third valve 33 and the fourth valve 23 at the same time.
In the present embodiment, the first valve 21, the second valve 22, the third valve 33 and the fourth valve 23 are needle valves or ball valves, and preferably, the first valve 21 and the second valve 22 are needle valves, which are a kind of fine adjustment valves mainly used for adjusting the flow rate, and the needle valves can be continuously and finely adjusted from the closed state to the open state. The opening degree between the first valve 21 and the second valve 22 can be controlled by a needle valve so that they can cooperate with each other when opened or closed to minimize pressure fluctuations of the hydrogen tank 1 and the external pipe 2.
The third valve 33 is preferably in the form of a ball valve, which enables a quick connection and disconnection between the pressure sensing element and the external line 2 for timely monitoring of the system pressure. Both the fourth valve 23 and the second valve 22 are not needle valves or ball valves at the same time, i.e., when the fourth valve 23 is one of a needle valve and a ball valve, the second valve 22 is the other of a needle valve and a ball valve. Preferably, the second valve 22 is a needle valve, the fourth valve 23 is a ball valve, and the second valve 22 and the fourth valve 23 which are arranged in series are arranged in different valve forms, so that the sealing performance of the external pipeline 2 can be improved, and the on-off of the hydrogen storage tank 1 and the outside can be better controlled.
The pressure detection element in this embodiment is pressure gauge 32 or pressure transmitter 31, also can install pressure gauge 32 and pressure transmitter 31 on external pipeline 2 simultaneously, and pressure gauge 32 can show the pressure value of hydrogen storage tank 1 and external pipeline 2 on the spot, can obtain the pressure state of hydrogen storage tank 1 more directly perceived, and pressure transmitter 31 can pass through electric signal transmission to controlling means with the pressure value in real time, can set up according to concrete reality when the installation.
Example 2
When the hydrogen station needs to be overhauled, the pressure fluctuation of the system can be reduced to the maximum extent through the opening degree matching among different valves, so that the hydrogen storage tank is smoothly and externally connected, and the opening and closing of the different valves are explained based on different working conditions.
When the hydrogenation station needs to be overhauled or the safety valve is disassembled and checked, the valve is closed according to the following control method: 1) firstly, closing the opening of the first valve by 50-80%, and then closing the opening of the second valve by more than 80%; 2) when the opening of the second valve is closed by more than 80%, closing the opening of the first valve by 90-95%, and then completely closing the second valve; 3) and completely closing the first valve after the second valve is completely closed.
After the safety valve is disassembled, checked, reinstalled or the maintenance of the hydrogenation station is completed, the valve is opened according to the following control method: 1) opening the opening degree of the second valve to 30%, and then gradually opening the opening degree of the first valve to 20%; 2) when the opening degree of the first valve is opened to 20%, gradually opening the opening degree of the second valve to 40%, and then gradually opening the first valve to 40%; 3) when the opening degree of the first valve is opened to 40%, gradually opening the opening degree of the second valve to 80%, and then gradually opening the first valve to 80%; 4) and when the opening degree of the first valve is opened to 80%, opening the opening degree of the second valve to 100%, and then gradually opening the first valve to 100%.
Before the first valve, the second valve, the third valve and the fourth valve of the hydrogen storage system are closed and opened, the hydrogen pressure of the hydrogen storage tank is preferably reduced to 20MPa, and more preferably reduced to less than 10 MPa.
When the system is provided with a fourth valve and the hydrogenation station needs to be overhauled or the safety valve is disassembled and checked, the valve is closed according to the following control method: 1) firstly, closing the opening degree of the first valve by 50-80%, and then closing the opening degree of the fourth valve by more than 80%; 2) when the opening degree of the fourth valve is closed by more than 80%, closing the opening degree of the first valve by 90-95%, and then completely closing the second valve; 3) and after the second valve is completely closed, completely closing the first valve and the fourth valve.
After the safety valve is checked and reinstalled or the maintenance of the hydrogenation station is completed, the valve is opened according to the following control method: 1) opening the opening degree of the second valve to 100%, and then gradually opening the opening degrees of the fourth valve and the first valve to 20%; 2) when the opening degree of the first valve is opened to 20%, gradually opening the opening degree of the fourth valve to 40%, and then gradually opening the first valve to 40%; 3) when the opening degree of the first valve is opened to 40%, gradually opening the opening degree of the fourth valve to 80%, and then gradually opening the first valve to 80%; 4) and when the opening degree of the first valve is opened to 80%, opening the opening degree of the fourth valve to 100%, and then gradually opening the first valve to 100%.
It is important to point out that through the cooperation between the above-mentioned valves, can make the break-make between hydrogen storage tank and the external world in the hydrogen storage system more gentle, also avoided opening totally or closing totally in the in-process of opening and close of valve simultaneously, reduced each valve from the at utmost and received the possibility that wearing and tearing and interior hourglass.
The utility model also provides an including above-mentioned hydrogen storage system's hydrogenation station, effectively improved the security of hydrogenation station operation, also reduced the change to the trouble valve simultaneously, under the prerequisite of guaranteeing the reliable steady operation in hydrogenation station, reduced the operation cost.
Need to explain have, different valves are except that above-mentioned setting form, and first valve still can be for the ball valve with the second valve, and the fourth valve sets up to the needle valve, can reach equally the utility model provides a technological effect no longer gives unnecessary details.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as the protection scope of the invention.
Claims (10)
1. A hydrogen storage system, comprising:
a hydrogen storage tank for storing hydrogen;
an external pipeline connected to the hydrogen storage tank for delivering hydrogen to the outside;
the hydrogen storage tank is characterized in that a pressure detection device and a safety valve are arranged on the external pipeline, and a valve for controlling the on-off or isolation of the hydrogen storage tank from the outside is arranged on the external pipeline among the hydrogen storage tank, the pressure detection device and the safety valve.
2. The hydrogen storage system according to claim 1, wherein the valve includes a first valve provided between the hydrogen gas storage tank and the pressure detection device, and a second valve provided between the pressure detection device and the relief valve.
3. A hydrogen storage system in accordance with claim 2, wherein said pressure detection means comprises a pressure detection element, and a third valve connected between the pressure detection element and said external line.
4. A hydrogen storage system according to claim 3, further comprising a control device, the second and third valves being electrically connected to the control device.
5. A hydrogen storage system according to claim 3, wherein the valve further comprises a fourth valve disposed downstream of the safety valve.
6. The hydrogen storage system of claim 5 wherein the first, second, third and fourth valves are needle or ball valves.
7. The hydrogen storage system of claim 6 wherein the fourth valve is one of a needle valve and a ball valve and the second valve is the other of a needle valve and a ball valve.
8. A hydrogen storage system according to claim 6, wherein the third valve is a ball valve.
9. A hydrogen storage system according to any of claims 3-8, characterized in that the pressure detection element is a pressure gauge and/or a pressure transmitter.
10. A hydrogen station comprising the hydrogen storage system of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022317621.6U CN214405605U (en) | 2020-10-16 | 2020-10-16 | Hydrogen storage system and hydrogenation station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022317621.6U CN214405605U (en) | 2020-10-16 | 2020-10-16 | Hydrogen storage system and hydrogenation station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214405605U true CN214405605U (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022317621.6U Active CN214405605U (en) | 2020-10-16 | 2020-10-16 | Hydrogen storage system and hydrogenation station |
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|---|---|
| CN (1) | CN214405605U (en) |
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- 2020-10-16 CN CN202022317621.6U patent/CN214405605U/en active Active
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