CN111156423A - Active safety protection system and method for hydrogen leakage - Google Patents
Active safety protection system and method for hydrogen leakage Download PDFInfo
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- CN111156423A CN111156423A CN201911404813.6A CN201911404813A CN111156423A CN 111156423 A CN111156423 A CN 111156423A CN 201911404813 A CN201911404813 A CN 201911404813A CN 111156423 A CN111156423 A CN 111156423A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
- F17C11/005—Use of gas-solvents or gas-sorbents in vessels for hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
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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
Abstract
The application relates to a hydrogen leakage active safety protection system and a hydrogen leakage active safety protection method. The hydrogen leakage active safety protection system can be applied to the transportation and storage processes of hydrogen. The hydrogen leakage active safety protection system can effectively and actively prevent the problems of fire or explosion caused by the leakage of hydrogen. The hydrogen leakage active safety protection system collects leaked hydrogen through the collection chamber. Detecting the hydrogen equivalent in the collection chamber in real time by the detection device. The active protection device is used for taking active safety protection measures when the hydrogen equivalent reaches a preset hydrogen equivalent threshold value so that hydrogen in the environment is not continuously accumulated any more. The hydrogen leakage active safety protection system can actively operate leaked hydrogen, and potential safety hazards caused by hydrogen leakage are reduced.
Description
Technical Field
The application relates to the technical field of hydrogen energy, in particular to a hydrogen leakage active safety protection system and a hydrogen leakage active safety protection method.
Background
With the large exploitation and use of traditional fossil energy, the energy exhaustion, climate change and ecological environment problems are increasingly prominent. However, the non-uniformity and intermittence of renewable energy sources cause huge impact on a power grid after grid connection, so that the energy storage technology is very important. Among the numerous energy storage technologies, hydrogen energy has significant advantages due to its high energy density, renewability, and cleanliness.
However, hydrogen is a very flammable and explosive gas, and when the volume fraction of hydrogen in air exceeds 4% -75%, explosion can be caused when the hydrogen meets a fire source. During the transportation and storage of hydrogen, the leakage of hydrogen is difficult to avoid, so the active protection after the leakage is very important.
Disclosure of Invention
In view of the above, there is a need to provide an active safety protection system and method for hydrogen leakage, which can solve the problem that hydrogen leakage is likely to cause fire or explosion during the transportation and storage of hydrogen.
An active safety shield system for hydrogen gas leaks, comprising:
the detection device is used for detecting the hydrogen equivalent in the environment;
and the active protection device is connected with the hydrogen transmission pipeline, or is arranged outside the hydrogen transmission pipeline and is not connected with the hydrogen transmission pipeline, and is used for taking active safety protection measures and giving an alarm when the hydrogen equivalent in the environment reaches a preset hydrogen equivalent threshold value so that the hydrogen in the environment is not continuously accumulated any more.
An active safety protection method for hydrogen leakage comprises the following steps:
s10, detecting hydrogen equivalent in the environment;
and S20, when the hydrogen equivalent in the environment reaches a preset hydrogen equivalent threshold, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
An active safety protection system against hydrogen leakage comprises:
the collecting chamber is arranged at the position where the hydrogen transmission pipeline is easy to leak and is used for providing a closed environment;
the active protection device is arranged in the collection chamber, or is connected with the collection chamber through a pipeline, or is arranged outside the hydrogen transmission pipeline and is not connected with the hydrogen transmission pipeline, and is used for taking active safety protection measures when the hydrogen equivalent in the collection chamber reaches a preset hydrogen equivalent threshold value so that hydrogen in the environment is not continuously accumulated any more.
An active safety protection method for hydrogen leakage comprises the following steps:
s50, providing a closed environment for containing leaked hydrogen;
and S60, when the hydrogen equivalent in the closed environment reaches a preset hydrogen equivalent threshold, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
An active safety shield system for hydrogen gas leaks, comprising:
the collecting chamber is arranged at the position where the hydrogen transmission pipeline is easy to leak and is used for providing a closed environment;
the detection device is arranged in the collection chamber and is used for detecting the hydrogen equivalent in the collection chamber;
the active protection device is arranged in the collection chamber or is connected with the collection chamber through a pipeline, and is used for taking active safety protection measures and giving an alarm when the hydrogen equivalent in the collection chamber reaches a preset hydrogen equivalent threshold value so that hydrogen in the environment is not continuously accumulated.
An active safety protection method for hydrogen leakage comprises the following steps:
s100, providing a closed environment for accommodating leaked hydrogen;
s200, obtaining the equivalent weight of hydrogen in the closed environment;
s300, when the hydrogen equivalent reaches a preset hydrogen equivalent threshold value, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
The application provides a hydrogen leakage active safety protection system and a method. The hydrogen leakage active safety protection system can be applied to the transportation and storage processes of hydrogen. The hydrogen leakage active safety protection system can effectively and actively prevent the problems of fire or explosion caused by the leakage of hydrogen. The hydrogen leakage active safety protection system collects leaked hydrogen through the collection chamber. Detecting the hydrogen equivalent in the collection chamber in real time by the detection device. The active protection device is used for taking active safety protection measures when the hydrogen equivalent reaches a preset hydrogen equivalent threshold value so that hydrogen in the environment is not continuously accumulated any more. The hydrogen leakage active safety protection system can actively operate leaked hydrogen, and potential safety hazards caused by hydrogen leakage are reduced.
Drawings
FIG. 1 is a schematic structural diagram of an active hydrogen leak safety system provided in one embodiment of the present application;
FIG. 2 is a schematic structural diagram of an active hydrogen leak safety system provided in an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a portion of a hydrogen leakage active safety system provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an active hydrogen leak safety system provided in an embodiment of the present application;
FIG. 5 is a schematic structural diagram of an active hydrogen leak safety system provided in an embodiment of the present application;
FIG. 6 is a schematic structural diagram of an active hydrogen leak safety system provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of an active hydrogen leak safety system provided in an embodiment of the present application;
FIG. 8 is a schematic structural diagram of an active hydrogen leak safety system provided in an embodiment of the present application;
FIG. 9 is a schematic structural diagram of an active hydrogen leak safety system provided in an embodiment of the present application;
FIG. 10 is a flow chart illustrating steps of a method for active hydrogen leak safety protection provided in an embodiment of the present application.
The reference numbers illustrate:
hydrogen leak active safety protection system 100
Hydrogen gas transfer line 20
Baffle 410a
Lead-out tank 430
Selecting valve 441
Sealing material storage apparatus 450
Execution circuit control unit 453
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
An embodiment of the present application provides a hydrogen leakage active safety protection system 100, which includes: a detection device 30 and an active guard 40.
The detection device 30 is used for detecting hydrogen equivalent in the environment. The active guard device 40 is connected to the hydrogen gas transmission line 20, or is disposed outside the hydrogen gas transmission line 20 and is not connected to the hydrogen gas transmission line 20. The active safeguard device 40 is configured to take active safeguard measures when the hydrogen equivalent in the environment reaches a preset hydrogen equivalent threshold, so that hydrogen in the environment is no longer continuously accumulated.
In this embodiment, the detecting device 30 may be disposed in an environment where hydrogen leakage is likely to occur, and after hydrogen leakage is detected, an active safety protection measure is taken and an alarm is given through the active protection device 40, so that hydrogen in the environment is no longer continuously accumulated. For example, a hydrogen detection sensor may be used to detect the hydrogen concentration in the environment, and when the hydrogen equivalent in the environment reaches a preset hydrogen equivalent threshold, the active protection device 40 described in any one of the following items is used to implement active protection. The active guard 40 may include an alarm. The alarm can be one or more of a warning lamp or a buzzer. The alarm may be provided on an outer side wall of the hydrogen gas transmission line 20. On an inner wall of the active containment vessel or within the leak accumulation space. The alarm may also be provided on an outer wall of the active protective housing. In this embodiment, the alarm is used for detecting the hydrogen content in the environment and carrying out early warning. The alarm can respond fast to inform workers of overhauling and prevent a large amount of leaked hydrogen from gathering.
An embodiment of the present application provides a hydrogen leakage active safety protection system 100, which includes: a collection chamber 10 and an active guard 40.
The collection chamber 10 is disposed at a position of the hydrogen gas transmission line 20 where leakage is likely to occur, and is used for providing a sealed environment.
The active protection device 40 is disposed in the collection chamber 10, or connected to the collection chamber 10 through a pipeline, or disposed outside the hydrogen transmission pipeline 20 and not connected to the hydrogen transmission pipeline 20. The active safeguard device 40 is configured to take active safeguard measures when the hydrogen equivalent in the collection chamber 10 reaches a preset hydrogen equivalent threshold, so that hydrogen in the environment no longer continuously accumulates.
In this embodiment, a closed environment is provided by the collection chamber 10, and the leaked hydrogen gas can be actively and safely protected in the closed environment. The collection chamber 10 of this embodiment may be actively shielded in combination with any of the active shielding devices 40 described below.
Referring to fig. 1 and 2, the present application provides an active safety system 100 for hydrogen leakage, comprising: a collection chamber 10, a detection device 30 and an active guard 40.
The collection chamber 10 is disposed at a position of the hydrogen gas transmission line 20 where leakage is likely to occur, and is used for providing a sealed environment. In particular, in one embodiment, the collection chamber 10 may be disposed in the hydrogen transfer line 20 to prevent the accumulation of hydrogen gas due to leakage from the hydrogen transfer line 20. The shape and size of the collection chamber 10 are not particularly limited as long as the portion of the hydrogen gas transmission line 20 susceptible to leakage is ensured inside the collection chamber 10. The size of the collection chamber 10 can be determined according to the diameter of the hydrogen transmission pipeline 20. The collection chamber 10 serves to temporarily store the leaking hydrogen or to conduct or digest/dilute the leaking hydrogen. For example, when the collection chamber 10 is disposed at the joint of the hydrogen gas transmission pipeline 20, which is prone to hydrogen gas leakage, the collection chamber 10 may be formed by an openable and closable collection housing. The openable closed collecting shell can be closed through a buckle and a fastening screw.
The detection device 30 is disposed in the collection chamber 10. The number of the detection devices 30 may be one or more. The position in which the detection means 30 are arranged can also be freely chosen within the collection chamber 10. The detection device 30 is used for detecting the hydrogen equivalent in the collection chamber 10. The hydrogen equivalent comprises all indexes or parameters which can represent the hydrogen leakage amount, including hydrogen concentration and pressure. Specifically, the hydrogen equivalent may include at least either of a hydrogen concentration or a hydrogen pressure. With the development of technology, the hydrogen equivalent can also include, for example, the proportion of active hydrogen or the content of active hydrogen. Active hydrogen gas can be considered to be a high purity gas that is more susceptible to fire or explosion. The detection means 30 may be a hydrogen concentration sensor. Or the detection means 30 may be a hydrogen pressure sensor. The detection sensitivity of the detection device 30 can be continuously improved.
As shown in fig. 1, the active guard 40 is disposed in the collection chamber 10. Or the active guard 40 is connected to the collection chamber 10 by tubing as shown in figure 2. The active safeguard device 40 is configured to take active safeguard measures when the hydrogen equivalent in the collection chamber 10 reaches a preset hydrogen equivalent threshold, so that hydrogen in the environment no longer continuously accumulates. The structure of the active guard 40 is not exclusive. For example, the active guard 40 may be a hydrogen sorption device. For example, the active protection device 40 may also be a set of hydrogen ignition safety devices, so as to ignite leaked hydrogen in a safe space, thereby reducing the existence of unavoidable safety hazards. For another example, the active protection device 40 may also be a set of hydrogen collecting device, which is used to store the leaked hydrogen in a safe storage area, and a purification device may be subsequently used to purify the leaked hydrogen, so that the leaked hydrogen can be reused, and the waste of energy is reduced.
The active guard 40 may also include an alarm. The alarm can be one or more of a warning lamp or a buzzer. The alarm may be provided on an outer side wall of the hydrogen gas transmission line 20. The alarm may also be located in the collection chamber 10. In this embodiment, the alarm is used for detecting the hydrogen content in the environment and carrying out early warning. The alarm can respond fast to inform workers of overhauling and prevent a large amount of leaked hydrogen from gathering.
In the present embodiment, an active safety protection system 100 for hydrogen leakage is provided. The hydrogen leakage active safety shield system 100 may be used during the transportation and storage of hydrogen. The hydrogen leakage active safety protection system 100 can effectively and actively prevent the problems of fire or explosion caused by the leakage of hydrogen. The hydrogen leakage active safety protection system 100 collects leaked hydrogen through the collection chamber 10. The hydrogen equivalent in the collection chamber 10 is detected in real time by the detection means 30. The active protection device 40 is configured to take active safety protection measures when the hydrogen equivalent reaches a preset hydrogen equivalent threshold value, so that hydrogen in the environment is no longer continuously accumulated. The hydrogen leakage active safety protection system 100 can actively operate leaked hydrogen, and potential safety hazards caused by hydrogen leakage are reduced.
In the present application, the hydrogen leakage active safety prevention system 100 may include the detection device 30 and the active prevention device 40. The hydrogen leakage active safety prevention system 100 may include the collection chamber 10 and the active prevention device 40. The hydrogen leakage active safety shield system 100 may also include the collection chamber 10, the detection device 30, and the active shield device 40.
Referring to fig. 3, in an embodiment, in the active safety protection system against hydrogen leakage 100, the detecting device 30 includes: a color-developing layer 310. The color development layer 310 is arranged on the pipe diameter of the connection part of the hydrogen transmission pipeline 20 and is used for detecting whether hydrogen leaks. When the color development layer 310 has a color change, it indicates that there is a hydrogen gas leak at the connection of the hydrogen gas transmission pipeline 20.
In this embodiment, the color developing layer 310 may include a hydrogen sensitive material, palladium metal, or Ln — Ni — Al alloy material, and when hydrogen gas is detected, the color of the color developing layer 310 may change. Specifically, the color development layer 310 may be disposed on the side of the pipe diameter at the connection of the hydrogen transmission pipeline 20. The color-developing layer 310 may further serve as a sealing function. For example, the connection of the hydrogen transmission pipeline 20 adopts a ferrule type structure. Two hydrogen transmission pipelines 20 to be connected are provided with clamping sleeves. The ferrule shown in fig. 3 can be matched with the hydrogen transmission pipelines 20 on the left and right sides to realize tight connection. The fastening can be achieved by a thread at the connection of the ferrule to the hydrogen delivery line 20. In the high-pressure hydrogen pipeline having the bite type structure, hydrogen leaks out if it encounters manufacturing defects, aging, vibration cracking, and looseness. The color development layer 310 is made of a hydrogen sensitive material and is coated on the tail part of a ferrule type structure or other pipelines which are easy to detect leakage. After the hydrogen gas leaks, a chemical reaction occurs when the hydrogen gas meets the color developing layer 310, so that the color developing layer 310 displays different colors. The coating area, shape and position of the color developing layer 310 are not particularly limited as long as the function of detecting the leaked hydrogen gas can be achieved by color development. The color developing layer 310 may also be disposed in the hydrogen leakage active safety prevention system 100 including the detection device 30 and the active prevention device 40.
Referring to fig. 4, in one embodiment, in the hydrogen leakage active safety prevention system 100, the active prevention device 40 is connected to the collection chamber 10 through a pipeline. The active guard 40 includes: a protective housing 410, an ignition source 411, and an oxidizer 412.
The protective casing 410 is connected to the collection chamber 10 by a pipe. The material of the protective case 410 may be the same as that of the collection chamber 10. The shielding case 410 may be disposed at a higher position than the collection chamber 10 so that the leaked hydrogen gas may be sufficiently moved upward, which helps to achieve active prevention and control of the leaked hydrogen gas. A baffle 410a may be provided between the protective housing 410 and the collection chamber 10 in one embodiment. The shutter 410a may be a shutter that may be manually or electrically controlled. When it is detected that the hydrogen equivalent in the collection chamber 10 reaches the hydrogen equivalent threshold, the damper 410a opens and leaking hydrogen can enter the shielding case 410. The baffle 410a may be controlled by a controller in the active guard 40. The controller in the active guard device 40 may determine whether the damper 410a needs to be opened according to the hydrogen equivalent amount detected by the detection device 30.
The ignition source 411 is disposed in the shield case 410, and is used for generating an electric spark. The ignition source 411 may be an automatic or manual ignition structure. For example, the ignition source 411 may be flint, controlled by a controller in the active guard 40. The controller in the active guard device 40 may determine whether the ignition source 411 needs to be turned on according to the hydrogen equivalent detected by the detection device 30.
The oxidizer 412 is disposed in the protective case 410 for enabling the leaked hydrogen to reach an ignition condition. In one embodiment, the oxidizer 412 may be a heater. The specific degree to which the oxidizer 412 needs to be heated can be selected in combination with the concentration or pressure of the leaking hydrogen. In addition, the positions of the structures in fig. 4 can be adjusted at will, so that the active protection device 40 can better realize active prevention and control of the leaked hydrogen.
In this embodiment, the active guard 40 is used to achieve ignition of the hydrogen in the collection chamber 10. The active guard 40 may further include a heat conducting flow for timely conducting away heat generated by the ignition of the leaked hydrogen, so as to avoid the negative effect of the active guard 40 on the hydrogen transmission line 20. May also be provided in the hydrogen leakage active safety shield system 100 comprising the collection chamber 10 and the active shield device 40.
Referring to fig. 5, in one embodiment, in the hydrogen leakage active safety protection system 100, the active protection device 40 includes: adsorption line 420.
The adsorption line 420 is disposed on the inner sidewall of the collection chamber 10. The adsorption line 420 may be a line leading out of the enclosed environment or the adsorption line 420 may be a circulation line. In one embodiment, the adsorption line 420 is a circulation line, and the leaking hydrogen gas can be sufficiently absorbed in the adsorption line 420. The adsorption pipeline 420 may include an adsorption layer provided with a physical adsorbate or a chemical adsorbate. The adsorption layer can be carbon nano-tubes or activated carbon, or a substance with physical adsorption capacity to hydrogen. The adsorption layer can also comprise any one or more of ferrotitanium, ferrotitanium carbon, calcium-manganese-nickel-aluminum alloy, palladium metal or a substance with chemical adsorption capacity to hydrogen. May also be provided in the hydrogen leakage active safety prevention system 100 including the detection device 30 and the active prevention device 40.
In one embodiment, the adsorption line 420 may be unidirectional, leading to a line outside the collection chamber 10. In one embodiment, the active guard 40 further comprises: and a one-way control valve disposed between the collection chamber 10 and the adsorption line 420 for controlling a transmission direction of the leaked hydrogen gas.
In this embodiment, the active protection device 40 shown in fig. 5 can actively regulate and control the hydrogen leaking from the hydrogen pipeline by adsorption, and the regulation and control mechanism may be cyclic adsorption.
In one embodiment, in the hydrogen leakage active safety protection system 100, the active protection device 40 further includes: and an adsorption tank 421. The adsorption tank 421 is connected to the adsorption line 420 through a line. The adsorption tank 421 is used for collecting or further adsorbing leaked hydrogen gas adsorbed by the adsorption layer of the adsorption pipeline 420.
In this embodiment, referring to fig. 5, a check valve or a lifting baffle may be further disposed between the adsorption tank 421 and the adsorption pipeline 420. The adsorption tank 421 may be provided in plurality. A plurality of adsorption tanks 421 are connected by a pipeline to realize cyclic adsorption, so that leakage of hydrogen is avoided and accumulation of hydrogen in one adsorption tank 421 is avoided. Adsorption layers can be disposed on the inner side walls of the adsorption pipeline 420 and the adsorption tank 421 for physical adsorption and/or chemical adsorption. May also be provided in the hydrogen leakage active safety prevention system 100 including the detection device 30 and the active prevention device 40.
Referring to fig. 6, in one embodiment, in the hydrogen leakage active safety prevention system 100, the active prevention device 40 is connected to the collection chamber 10 through a pipeline, and the active prevention device 40 includes: the tank 430 is exported.
The lead-out tank 430 is connected to the collection chamber 10 through a pipe for collecting the leaked hydrogen gas in the collection chamber 10. The pressure in the lead-out tank 430 is lower than the pressure in the collection chamber 10. The specific pressure in the lead-out tank 430 may be related to the concentration and pressure of the piping leakage hydrogen in the active prevention device 40 according to actual needs. In another embodiment, a hydrogen processing device may be further disposed in the direction of the pipeline of the lead-out tank 430 away from the collection chamber 10. The hydrogen processing device can purify the leaked hydrogen in the lead-out tank 430, and the leaked hydrogen can be reprocessed and recycled. May also be provided in the hydrogen leakage active safety shield system 100 comprising the collection chamber 10 and the active shield device 40.
Referring to fig. 7, in one embodiment, in the hydrogen leakage active safety protection system 100, the active protection device 40 includes: a bypass line 440 and a gate valve 441.
The bypass line 440 is connected to the collection chamber 10 by a line. The bypass line 440 may be provided in a plurality of stages. The gate valve 441 is disposed on the hydrogen gas transmission line 20 and the bypass line 440, and when the detection device 30 detects that the hydrogen gas equivalent in the collection chamber 10 reaches the hydrogen equivalent threshold, the gate valve 441 closes the hydrogen gas transmission line 20 and gates the bypass line 440. The leaked hydrogen in the collection chamber 10 is bypassed, preferably into the hydrogen line of the next stage. In a specific embodiment, after the active prevention and control device 40 is additionally provided with a bypass line, when the detection device 30 detects that the hydrogen equivalent in the collection chamber 10 is greater than or equal to the hydrogen equivalent threshold, the other bypass lines 440 can be opened under the control of the execution circuit. May also be provided in the hydrogen leakage active safety shield system 100 comprising the collection chamber 10 and the active shield device 40.
In one embodiment, when the detection device 30 detects that the hydrogen equivalent in the collection chamber 10 includes a hydrogen concentration or a hydrogen pressure reaches the hydrogen equivalent threshold value when the bypass line is not provided, the active guard device 40 shuts off the hydrogen transfer line 20. And finding out and maintaining the leakage point of the hydrogen transmission pipeline 20 for reuse. For example, shutting off the hydrogen delivery line 20 may be accomplished by shutting off an existing valve to interrupt the hydrogen delivery line.
Referring to fig. 8, in one embodiment, in the hydrogen leakage active safety prevention system 100, the active prevention device 40 is disposed in the collection chamber 10. The active guard 40 includes: a seal material housing device 450 and a pressure sensing valve 451.
The sealing material container 450 is disposed in the collection chamber 10. The sealing material container 450 is used for containing a sealing material. The pressure-sensitive valve 451 is connected to the seal material housing device 450 through a pipe. The pressure-sensitive valve 451 is used to control whether the sealing material is ejected. May also be provided in the hydrogen leakage active safety shield system 100 comprising the collection chamber 10 and the active shield device 40.
In one embodiment, when the hydrogen equivalent in the collection chamber 10 reaches the preset hydrogen equivalent threshold, the sensing pressure valve 451 opens and the sealing material is ejected to the leakage of the hydrogen transmission line 20.
In this embodiment, the sealing material is solidified to seal the leakage of the hydrogen gas transmission pipeline 20. The active guard 40 may also include a heating device if the sealing material needs to be heated when sprayed. The heating device is used for heating the sealing material sprayed to the leakage position of the hydrogen transmission pipeline 20 to help the sealing material to be rapidly melted and solidified.
Referring to fig. 9, in one embodiment, in the hydrogen leakage active safety protection system 100, the active protection device 40 includes: a sealing material container 450, a solenoid valve 452, and an execution circuit control unit 453.
The sealing material container 450 is disposed in the collection chamber 10 and is used for containing a sealing material. The solenoid valve 452 is provided at the discharge port of the sealing material container 450. The execution circuit control unit 453 is electrically connected to the solenoid valve 452. The execution circuit control unit 453 is configured to control the electromagnetic valve 452 to open when the hydrogen equivalent in the collection chamber 10 reaches the preset hydrogen equivalent threshold, and the sealing material is ejected to the leakage of the hydrogen transmission pipeline 20 by the execution circuit control unit 453.
In this embodiment, the active prevention and control strategy provided is the same as the active prevention and control strategy provided in the embodiment in fig. 9, but there is a certain difference in implementation means. In the present embodiment, the control and release of the sealing material are realized by the electromagnetic valve 452 and the execution circuit control unit 453. May also be provided in the hydrogen leakage active safety shield system 100 comprising the collection chamber 10 and the active shield device 40.
In one embodiment, in the hydrogen leakage active safety protection system 100, the collection chamber 10 is disposed at the hydrogen transmission line 20, the intersection of the hydrogen transmission line 20, the inlet or outlet of a hydrogen storage device, or the sidewall of the hydrogen storage device.
The environment in which the collection chamber 10 may be located is provided in this embodiment. The collection chamber 10 can be placed in any location where hydrogen leakage is likely to occur. For example, the collection chamber 10 may be disposed in the hydrogen transfer line 20 to prevent accumulation of hydrogen gas due to leakage from the hydrogen transfer line 20. The collection chamber 10 may also be disposed at the intersection of the hydrogen transport line 20, and the collection chamber 10 may completely wrap the intersection to prevent leakage of hydrogen from diffusing into the atmosphere and causing danger. The collection chamber 10 may also be disposed at an inlet or an outlet of the hydrogen transmission pipeline 20, or at a joint of the inlet and the outlet, so as to avoid hydrogen leakage caused by poor sealing effect at the inlet, the outlet, and the joint. The collection chamber 10 may also be provided at the inlet or outlet of the hydrogen storage device. Or the collection chamber 10 may be provided in the side wall of the hydrogen storage device. When the collection chamber 10 can also be disposed on the sidewall of the hydrogen storage device, the collection chamber 10 can be a collection structure that is attached to the hydrogen storage device in a sealed manner by the edge, so as to prevent the hydrogen leakage caused by the aging of the sidewall or the corrosion of the sidewall.
In one embodiment, there is provided a hydrogen leakage active safety protection method, including:
s10, detecting hydrogen equivalent in the environment;
and S20, when the hydrogen equivalent in the environment reaches a preset hydrogen equivalent threshold, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
In one embodiment, there is provided a hydrogen leakage active safety protection method, including:
s50, providing a closed environment for containing leaked hydrogen;
and S60, when the hydrogen equivalent in the closed environment reaches a preset hydrogen equivalent threshold, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
Referring to fig. 10, the present application further provides an active safety protection method for hydrogen leakage, including:
s100, providing a closed environment for containing leaked hydrogen.
In this step, the collection chamber 10 provided in fig. 1-9 above may be used as the closed environment. The closed environment is formed to accommodate leaking hydrogen. The specific location of the closed environment can be referred to the location where the collection chamber 10 can be located, so as to avoid a dangerous situation caused by leakage of the hydrogen gas transmission line 20.
S200, acquiring hydrogen equivalent in the closed environment, wherein the hydrogen equivalent comprises at least one of hydrogen concentration or hydrogen pressure.
In this step, the hydrogen equivalent may include a proportion of active hydrogen or a content of active hydrogen, in addition to the leaked hydrogen concentration or the leaked hydrogen pressure.
S300, when the hydrogen equivalent reaches a preset hydrogen equivalent threshold value, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating. The active safety protection measures comprise all protection methods which enable hydrogen to be no longer continuously accumulated in the above mode. The active safety precaution includes: any one or more of igniting the hydrogen in the closed environment, adsorbing the hydrogen in the closed environment, collecting the hydrogen in the closed environment, isolating the hydrogen in the closed environment and sealing and blocking the hydrogen in the closed environment.
In this step, the active safety protection measures for "igniting the hydrogen in the sealed environment, adsorbing the hydrogen in the sealed environment, collecting the hydrogen in the sealed environment, isolating the hydrogen in the sealed environment, and hermetically blocking the hydrogen in the sealed environment" may include, but are not limited to, the hydrogen leakage active safety protection system 100 provided in fig. 1 to 9.
In the embodiment, an active safety protection method for hydrogen leakage is provided. The active safety protection method for hydrogen leakage can be applied to the transportation and storage processes of hydrogen. The hydrogen leakage active safety protection method can effectively and actively prevent the problems of fire or explosion caused by the leakage of hydrogen. The hydrogen leakage active safety protection method collects leaked hydrogen through the closed environment. Obtaining the equivalent weight of hydrogen in the closed environment, and judging: and when the hydrogen equivalent reaches a preset hydrogen equivalent threshold value, taking active safety protection measures. In the hydrogen leakage active safety protection method, the hydrogen in the closed environment can not be continuously accumulated by taking active safety protection measures. The hydrogen leakage active safety protection method can actively operate leaked hydrogen, and potential safety hazards caused by hydrogen leakage are reduced.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. An active safety protection system against hydrogen leakage, comprising:
a detection device (30) for detecting hydrogen equivalent in the environment;
and the active protection device (40) is connected with the hydrogen transmission pipeline (20), or is arranged outside the hydrogen transmission pipeline (20) and is not connected with the hydrogen transmission pipeline (20), and is used for taking active safety protection measures and giving an alarm when the hydrogen equivalent in the environment reaches a preset hydrogen equivalent threshold value so that the hydrogen in the environment is not continuously accumulated any more.
2. The active safety protection system against hydrogen leakage according to claim 1, characterized in that the detection device (30) comprises:
and the color development layer (310) is arranged on the pipe diameter of the joint of the hydrogen transmission pipeline (20) and used for detecting whether hydrogen leaks.
3. The active safety protection system against hydrogen leakage according to claim 1, characterized in that the active protection device (40) comprises:
and the adsorption pipeline (420) is arranged in a leakage accumulation space for containing leaked hydrogen, the inner side wall of the collection chamber (10) is provided, and the adsorption pipeline (420) is a pipeline leading to the outside of the closed environment or the adsorption pipeline (420) is a circulating pipeline.
4. The active safety shield system against hydrogen leakage according to claim 3, characterized in that the active shielding device (40) further comprises:
and the adsorption tank (421) is connected with the adsorption pipeline (420), and the adsorption tank (421) is used for collecting or performing further adsorption treatment on the leaked hydrogen adsorbed by the adsorption pipeline (420).
5. An active safety protection system against hydrogen leakage, comprising:
the collection chamber (10) is arranged at the position where the hydrogen transmission pipeline (20) is easy to leak and is used for providing a closed environment;
the active protection device (40) is arranged in the collection chamber (10), or is connected with the collection chamber (10) through a pipeline, or is arranged outside the hydrogen transmission pipeline (20) and is not connected with the hydrogen transmission pipeline (20), and is used for taking active safety protection measures when the hydrogen equivalent in the collection chamber (10) reaches a preset hydrogen equivalent threshold value so that hydrogen in the environment is not continuously accumulated any more.
6. Active safety protection system against hydrogen leakage according to claim 5, characterized in that said active protection device (40) is connected by a pipe with said collection chamber (10), said active protection device (40) comprising:
a protective housing (410);
an ignition source (411) disposed within the protective housing (410) for generating an electric spark;
and the combustion-supporting device (412) is arranged in the protective shell (410) and is used for enabling leaked hydrogen to reach an ignition condition.
7. Active safety protection system against hydrogen leakage according to claim 5, characterized in that said active protection device (40) is connected by a pipe with said collection chamber (10), said active protection device (40) comprising:
a lead-out tank (430) connected with the collection chamber (10) through a pipeline and used for collecting leaked hydrogen in the collection chamber (10), wherein the pressure in the lead-out tank (430) is smaller than that in the collection chamber (10).
8. The active safety protection system against hydrogen leakage according to claim 5, characterized in that the active protection device (40) comprises:
a bypass line (440) connected to the collection chamber (10) by a line; and
and the selective valve (441) is arranged on the hydrogen transmission pipeline (20) and the bypass pipeline (440), and when the hydrogen equivalent in the collection chamber (10) reaches the hydrogen equivalent threshold value, the selective valve (441) closes the hydrogen transmission pipeline (20) and gates the bypass pipeline (440).
9. Active safety protection system against hydrogen leakage according to claim 5, characterized in that said active protection device (40) is arranged inside said collection chamber (10); the active guard (40) comprises:
a sealing material storage device (450) which is provided in the collection chamber (10) and stores a sealing material;
a pressure-sensitive valve (451) connected to the seal material storage device (450) through a pipe line, for controlling whether the seal material is ejected;
when the hydrogen equivalent in the collection chamber (10) reaches the preset hydrogen equivalent threshold value, the induction pressure valve (451) is opened, and the sealing material is sprayed to the leakage position of the hydrogen transmission pipeline (20).
10. The active safety protection system against hydrogen leakage according to claim 5, characterized in that the active protection device (40) comprises:
a sealing material storage device (450) which is provided in the collection chamber (10) and stores a sealing material;
a solenoid valve (452) provided at an ejection port of the sealing material housing device (450);
and an execution circuit control unit (453) electrically connected with the electromagnetic valve (452) and used for controlling the electromagnetic valve (452) to be opened when the hydrogen equivalent in the collection chamber (10) reaches the preset hydrogen equivalent threshold value, and the sealing material is sprayed to the leakage position of the hydrogen transmission pipeline (20) by the execution circuit control unit (453).
11. A hydrogen leak safety protection system, comprising:
the collection chamber (10) is arranged at the position where the hydrogen transmission pipeline (20) is easy to leak and is used for providing a closed environment;
a detection device (30) arranged in the collection chamber (10) for detecting the hydrogen equivalent in the collection chamber (10);
the active protection device (40) is arranged in the collection chamber (10) or is connected with the collection chamber (10) through a pipeline and used for taking active safety protection measures and giving an alarm when the hydrogen equivalent in the collection chamber (10) reaches a preset hydrogen equivalent threshold value so that hydrogen in the environment is not continuously accumulated any more.
12. Active safety protection system against hydrogen leakage according to any of claims 1 to 11, characterized in that said collection chamber (10) is provided at said hydrogen delivery line (20), at the intersection of said hydrogen delivery line (20), at the inlet or outlet of a hydrogen storage device or at the side wall of a hydrogen storage device.
13. An active safety protection method for hydrogen leakage is characterized by comprising the following steps:
s10, detecting hydrogen equivalent in the environment;
and S20, when the hydrogen equivalent in the environment reaches a preset hydrogen equivalent threshold, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
14. An active safety protection method for hydrogen leakage is characterized by comprising the following steps:
s50, providing a closed environment for containing leaked hydrogen;
and S60, when the hydrogen equivalent in the closed environment reaches a preset hydrogen equivalent threshold, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
15. An active safety protection method for hydrogen leakage is characterized by comprising the following steps:
s100, providing a closed environment for accommodating leaked hydrogen;
s200, detecting the equivalent of hydrogen in the closed environment;
s300, when the hydrogen equivalent reaches a preset hydrogen equivalent threshold value, taking active safety protection measures to prevent hydrogen in the environment from continuously accumulating.
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