CN111156422A - Active safety protection device and method for hydrogen pipeline - Google Patents
Active safety protection device and method for hydrogen pipeline Download PDFInfo
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- CN111156422A CN111156422A CN201911404808.5A CN201911404808A CN111156422A CN 111156422 A CN111156422 A CN 111156422A CN 201911404808 A CN201911404808 A CN 201911404808A CN 111156422 A CN111156422 A CN 111156422A
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- hydrogen
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- pipeline
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Pipeline Systems (AREA)
Abstract
本申请涉及一种氢气管路主动安全防护装置及方法。包括壳体、第一柔性密封件、报警电路以及氢气吸附件。壳体内部具有腔体，氢气运输管道置于腔体，并且壳体与氢气运输管道可拆卸连接。第一柔性密封件设置于腔体，以在腔体内形成绝缘密封环境。报警电路设置于腔体。报警电路用于检测腔体内的氢气含量、气体压力值或者气体压力变化量，并进行预警。氢气吸附件设置于腔体，用于吸附腔体内的氢气。本申请通过在易发生泄漏处制造一个能够约束泄漏氢气的环境，不仅可以防止氢气逸散，而且，通过报警电路快速响应，以通知工作人员进行检修，防止泄漏氢气大量聚集，并通过氢气吸附件将泄漏的氢气在达到爆炸极限前及时吸附，有效防止事故的发生。
The present application relates to a hydrogen pipeline active safety protection device and method. It includes a casing, a first flexible sealing member, an alarm circuit and a hydrogen adsorption member. There is a cavity inside the shell, the hydrogen transport pipeline is placed in the cavity, and the shell and the hydrogen transport pipeline are detachably connected. The first flexible seal is disposed in the cavity to form an insulating and sealed environment in the cavity. The alarm circuit is arranged in the cavity. The alarm circuit is used to detect the hydrogen content, the gas pressure value or the gas pressure change in the cavity, and give an early warning. The hydrogen adsorption member is arranged in the cavity, and is used for adsorbing hydrogen in the cavity. The present application can not only prevent hydrogen from escaping by creating an environment that can constrain leaking hydrogen at the place where leakage is prone to occur, but also respond quickly through an alarm circuit to notify the staff to conduct maintenance, prevent a large amount of leaked hydrogen from accumulating, and prevent the leakage of hydrogen from accumulating in large quantities. The leaked hydrogen can be adsorbed in time before reaching the explosion limit to effectively prevent accidents.
Description
Technical Field
The application relates to the field of hydrogen delivery, in particular to an active safety protection device and method for a hydrogen pipeline.
Background
Energy exhaustion and environmental pollution caused by fossil energy consumption are becoming serious, and large-scale development and utilization of renewable energy are imperative. Although renewable energy resources are abundant and widely distributed, the renewable energy resources fluctuate violently and are periodically influenced by natural environments. Hydrogen is an effective energy storage mode, electric energy is converted into chemical energy to be stored in the hydrogen in the peak period of renewable energy power generation, and the energy carried by the hydrogen is converted into the electric energy again through a fuel cell for use in the peak period of power utilization. Therefore, the technologies of hydrogen preparation, storage, transportation and the like are regarded by relevant researchers.
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. Therefore, hydrogen leakage and active protection after leakage during transportation and storage of hydrogen are very important.
Disclosure of Invention
Based on this, the present application provides an active safety protection device and method for a hydrogen pipeline, so as to prevent a large amount of leaked hydrogen from gathering and further causing safety accidents.
An active safety device for a hydrogen pipeline, comprising:
the hydrogen transportation device comprises a shell, a hydrogen transportation pipeline and a hydrogen storage tank, wherein the shell is internally provided with a cavity, the hydrogen transportation pipeline is arranged in the cavity, and the shell is detachably connected with the hydrogen transportation pipeline;
a first flexible seal disposed within the cavity to form an insulating sealed environment within the cavity;
the alarm circuit is arranged in the cavity and used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity and carrying out early warning; and
the hydrogen adsorbs the piece, set up in the cavity is used for adsorbing hydrogen in the cavity.
In one embodiment, the hydrogen adsorbing member is disposed on an inner sidewall of the housing adjacent to the first flexible sealing member.
In one embodiment, the material of the hydrogen adsorbing member is any one or more of ferrotitanium, ferrotitanium-carbon alloy, calcium-manganese-nickel-aluminum alloy, rare earth lanthanum-nickel, complex, carbonaceous material or other hydrogen adsorbing material.
In one embodiment, the housing has an opening extending through the housing in the direction of extension of the hydrogen transport conduit, the opening being adapted to locate the hydrogen transport conduit in the cavity.
In one embodiment, the method further comprises the following steps:
the buckle is fixedly arranged on the outer side wall of the shell; and
the snap ring, one end is fixed set up in the lateral wall of casing, and the snap ring with the buckle interval set up in the both ends of opening, work as the other end block of snap ring in during the buckle, will through pressing the snap ring the opening is closed.
In one embodiment, the method further comprises the following steps:
a second flexible seal disposed at the opening of the housing.
In one embodiment, the first flexible sealing element and the second flexible sealing element are integrally molded, and the material of the first flexible sealing element and the material of the second flexible sealing element are both any one of a rubber material, a resin material, a plastic material, a silicone material or other flexible sealing materials.
In one embodiment, the alarm circuit comprises:
the detector is arranged in the cavity and used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity; and
and the alarm is electrically connected with the detector, and sends an alarm signal to the alarm when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector is greater than a preset value.
In one embodiment, the detector is any one of a hydrogen concentration detector, a gas pressure value detector and a gas pressure change detector.
In one embodiment, the alarm is one or more of a warning light or a buzzer.
An active safety protection method for a hydrogen pipeline is implemented by using the active safety protection device for a hydrogen pipeline in any one of the above embodiments, and the active safety protection method for a hydrogen pipeline includes:
s10, wrapping a joint of a hydrogen transportation pipeline by using a shell, and arranging a first flexible sealing element between the shell and the hydrogen transportation pipeline to form a sealed cavity;
s20, detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity by using an alarm circuit, and adsorbing the hydrogen in the cavity by using a hydrogen adsorption piece;
and S30, when the alarm circuit detects that the hydrogen content, the gas pressure value or the gas pressure variation in the cavity is greater than a preset value, alarming.
The active safety protection device for the hydrogen pipeline comprises a shell, a first flexible sealing element, an alarm circuit and a hydrogen adsorption element. The shell is internally provided with a cavity, a hydrogen transportation pipeline is arranged in the cavity, and the shell is detachably connected with the hydrogen transportation pipeline. The first flexible seal is disposed in the cavity to form an insulating sealed environment within the cavity. The alarm circuit is arranged in the cavity. The alarm circuit is used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity and carrying out early warning. The hydrogen adsorbs the piece set up in the cavity is used for adsorbing hydrogen in the cavity. Above-mentioned hydrogen gas pipeline initiative safety device not only can prevent the hydrogen loss through making the environment that can retrain leaking hydrogen in the department that easily leaks, moreover, through warning circuit quick response to inform the staff to overhaul, prevent leaking a large amount of gathering of hydrogen, and through the hydrogen adsorbs the hydrogen that the piece will leak and in time adsorbs before reaching the explosion limit, effectively prevents the emergence of accident.
Drawings
Fig. 1 is a diagram of an active safety device for a hydrogen pipeline according to an embodiment of the present disclosure;
FIG. 2 is a diagram of an active safety device for a hydrogen pipeline according to one embodiment of the present disclosure;
FIG. 3 is a diagram illustrating the use of the active safety device in a hydrogen pipeline according to one embodiment of the present disclosure;
FIG. 4 is a diagram illustrating the use of the active safety device in a hydrogen pipeline according to one embodiment of the present disclosure;
FIG. 5 is a diagram of an active safety device for a hydrogen pipeline according to one embodiment of the present disclosure;
FIG. 6 is a diagram of an alarm circuit provided by one embodiment of the present application;
fig. 7 is a flowchart of an active safety protection method for a hydrogen pipeline according to an embodiment of the present application.
Description of the main element reference numerals
Fastener 110
Snap ring 120
Screw 150
First flexible seal 200
Second flexible seal 400
Pipe joint nut 30
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an active safety device 10 for a hydrogen pipeline is provided. The hydrogen circuit active safety device 10 includes a housing 100, a first flexible seal 200, an alarm circuit 300, and a hydrogen adsorbing member 500.
The housing 100 has a cavity 101 therein, the hydrogen transport pipe 20 is disposed in the cavity 101, and the housing 100 is detachably connected to the hydrogen transport pipe 20. The first flexible sealing member 200 is disposed in the cavity 101 to form an insulating and sealing environment in the cavity 101. Alarm circuit 300 set up in cavity 101 is used for detecting hydrogen content, gas pressure value or gas pressure variation in the cavity 101 to carry out the early warning, hydrogen adsorb piece 500 set up in cavity 101 is used for adsorbing hydrogen in the cavity 101.
Specifically, the shape and size of the housing 100 are not particularly limited as long as the portion of the hydrogen transport pipe 20 that is susceptible to leakage is ensured inside the housing 100. The shape and size of the housing 100 may be set according to the pipe diameter of the hydrogen transport pipe 20. The housing 100 ensures that the parts of the hydrogen transport pipe 20 that are susceptible to leakage are inside the housing 100. That is, for example, when the part of the hydrogen transportation pipe 20 that is susceptible to leakage is a transportation pipe joint, it is necessary to ensure that the transportation pipe joint can be entirely located in the cavity 101 of the housing 100. The transport pipe joints of the respective sections of hydrogen transport pipe 20 are connected by pipe joint nuts 30. Of course, the transportation pipe joints of the hydrogen transportation pipes 20 may be connected by other connection methods. The upper and lower bottom surfaces of the housing 100 have through-holes to facilitate the passage of the hydrogen transport pipe 20. The housing 100 and the hydrogen transportation pipeline 20 may be detachably connected by providing an opening in the housing 100, and when the hydrogen transportation pipeline is properly installed, the housing 100 is sleeved on a part of the hydrogen transportation pipeline, where leakage is likely to occur, through the opening in the housing 100. The housing 100 may be detachably connected to the hydrogen transportation pipe 20 by providing the housing 100 as two half shells that are butted together. The two half shells can be detachably connected with each other through bolts, clamping or other detachable modes. The detachable connection of the housing 100 and the hydrogen transportation pipeline 20 may also be achieved by configuring the housing 100 as an elastically contractible structure, and before the hydrogen transportation pipeline is installed, the housing 100 is directly sleeved on a part of the hydrogen transportation pipeline, where leakage is likely to occur, and then the hydrogen transportation pipeline is installed.
To achieve a seal between the housing 100 and the hydrogen transport conduit 20, the first flexible seal 200 may be provided within the cavity 101. The first flexible sealing element 200 may be made of rubber, resin, plastic, or silicone. The position of the first flexible seal 200 may be a portion between the upper bottom surface of the housing 100 and the hydrogen transport pipe 20 and a portion between the housing 100 and the hydrogen transport pipe 20 of the lower bottom surface of the housing 100. The first flexible sealing member 200 may be fixedly disposed in the cavity 101 by bonding. The first flexible sealing element 200 may also be provided with a clamping member at a corresponding position of the housing 100, and the clamping member fixes the first flexible sealing element 200 to the cavity 101.
The hydrogen adsorbing member 500 is disposed adjacent to the first flexible sealing member 200 on the inner sidewall of the housing 100. The hydrogen absorption member 500 may be disposed on the entire inner wall of the insulation sealing chamber 101. The hydrogen adsorbing member 500 may be disposed only at a position adjacent to the first flexible sealing member 200. The hydrogen absorbing member 500 is made of any one or more of ferrotitanium, ferrotitanium-carbon alloy, calcium-manganese-nickel-aluminum alloy, rare earth lanthanum-nickel, complex, carbonaceous material or other hydrogen absorbing material.
When hydrogen leakage occurs at the joint of the hydrogen transportation pipeline 20, the hydrogen pipeline active safety protection device 10 has a small inner space, the hydrogen concentration can be quickly increased, the internal gas pressure can be quickly increased, the alarm circuit 300 can quickly respond, and then remind a worker to timely close the hydrogen transportation valve and overhaul the pipeline with leakage. In addition, for the hydrogen gas that has leaked into the cavity 101, the hydrogen gas can be adsorbed by the hydrogen adsorbing member 500, so that the hydrogen gas is prevented from escaping into the external environment. The alarm circuit 300 can prompt for maintenance in a color, sound, light or electrical signal manner.
In this embodiment, the active safety device 10 for a hydrogen pipeline includes a housing 100, a first flexible sealing element 200, and an alarm circuit 300. The housing 100 has a cavity 101 therein, the hydrogen transport pipe 20 is disposed in the cavity 101, and the housing 100 is detachably connected to the hydrogen transport pipe 20. The first flexible sealing member 200 is disposed in the cavity 101 to form an insulating and sealing environment in the cavity 101. The alarm circuit 300 is disposed in the cavity 101. The alarm circuit 300 is used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101 and carrying out early warning. Above-mentioned hydrogen pipeline initiative safety device 10 not only can prevent the hydrogen loss through making the environment that can retrain leaking hydrogen in the department of easily taking place to leak, moreover, through warning circuit 300 quick response to inform the staff to overhaul, prevent leaking a large amount of aggregations of hydrogen, and through hydrogen adsorption member 500 is in time adsorbed the hydrogen of leaking before reaching the explosion limit, effectively prevents the emergence of accident.
Referring to fig. 2 to 4, in one embodiment, the housing 100 has an opening 102 penetrating through the housing 100 along the extending direction of the hydrogen transportation pipe 20, and the opening 102 is used for placing the hydrogen transportation pipe 20 in the cavity 101. In one alternative embodiment, to achieve a seal between the housing 100 and the hydrogen transport conduit 20, the hydrogen pipeline active safety device 10 further comprises a snap 110, a snap ring 120, and a second flexible seal 400.
The buckle 110 is fixedly disposed on an outer sidewall of the housing 100. One end of the snap ring 120 is fixedly disposed on the outer sidewall of the housing 100, the snap ring 120 and the buckle 110 are disposed at two ends of the opening 102 at an interval, and when the other end of the snap ring 120 is buckled to the buckle 110, the opening 102 is closed by pressing the snap ring 120. The second flexible seal 400 is disposed at the opening 102 of the housing 100. The buckle 110 and the snap ring 120 cooperate to fix the hydrogen pipeline active safety device 10 to a pipeline, and press the opening 102 of the housing 100 to close the opening, thereby achieving a sealing effect. The release can also be quick when the device needs to be repaired or replaced.
In an alternative embodiment, the first flexible seal 200 and the second flexible seal 400 may be two separately disposed seals. In one alternative embodiment, the first flexible seal 200 is integrally formed with the second flexible seal 400. The material of the first flexible sealing member 200 and the material of the second flexible sealing member 400 are any one of a rubber material, a resin material, a plastic material, a silicone material, or other flexible sealing materials.
In an alternative embodiment, the hydrogen pipeline active safety device 10 can also achieve sealing between the housing 100 and the hydrogen transport pipeline 20 through two extension plates and a snap and a clamping groove. Two extension plates may be disposed on both sides of the opening 102. Two extension plates may be integrally formed with the housing 100. The fastener is arranged on one extending plate, the clamping groove is arranged on the other extending plate, and the fastener and the clamping groove are clamped to close the opening in the shell 100.
In this embodiment, the housing 100 has an opening 102 extending through the housing 100 along the direction of extension of the hydrogen transport pipe 20, so that the housing 100 can be detachably mounted without disassembling the hydrogen transport pipe 20.
Referring to fig. 5, in one embodiment, the housing 100 includes a first clamping body 130 and a second clamping body 140.
The first clamping body 130 has a first screw hole 131. The second clamping body 140 has a second screw hole 141. The first flexible sealing member 200 is disposed between the first clamping body 130 and the second clamping body 140. A connector detachably connects the first clamping body 130 and the second clamping body 140 through the second screw hole 141 and the first screw hole 131 to form the cavity between the first clamping body 130 and the second clamping body 140.
Specifically, the first clamping body 130 and the second clamping body 140 may be half shells having the same shape, and when the first clamping body 130 and the second clamping body 140 are butted, the housing 100 is formed. Screw holes are formed at corresponding positions of the first clamping body 130 and the second clamping body 140, so that the two half shells can be detachably connected. The first flexible sealing member 200 may be positioned at both ends of the first clamping body 130 and both ends of the second clamping body 140. Of course, a second flexible sealing member 400 may be provided at a position where the first clamping body 130 and the second clamping body 140 are butted. At this time, a third screw hole 401 is formed at a corresponding position of the second flexible sealing member 400, so that a screw 150 passes through the first screw hole 131, the third screw hole 401 and the second screw hole 141 in sequence to detachably connect the first clamping body 130 and the second clamping body 140. Optionally, the first flexible seal 200 is integrally formed with the second flexible seal 400.
In this embodiment, the housing 100 may be detachably mounted to the housing 100 through the first clamping member 130 and the second clamping member 140 without disassembling the hydrogen transportation pipe 20.
Referring to fig. 6, in one embodiment, the alarm circuit 300 includes a detector 310 and an alarm 320.
The detector 310 is disposed in the cavity 101, and configured to detect a hydrogen content, a gas pressure value, or a gas pressure variation in the cavity 101. The alarm 320 is electrically connected to the detector 310. When the hydrogen content, the gas pressure value, or the gas pressure variation detected by the detector 310 is greater than a preset value, an alarm signal is sent to the alarm 320.
In an alternative embodiment, the detector 310 is any one of a hydrogen concentration detector, a gas pressure value detector, or a gas pressure change detector. In one optional embodiment, the alarm 320 is one or more of a warning light or a buzzer. The alarm 320 may be disposed on an inner wall of the housing 100. The alarm 320 may also be disposed on an outer wall of the housing 100. Referring to fig. 5, in an alternative embodiment, the alarm 320 may include a power source, a switch element and a warning light electrically connected in sequence. The detector 310 may control the on and off of the switch. When the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101 from the detector 310 is larger than a preset value, the switch is controlled to be connected, and then the warning light is emitted by the warning lamp.
In this embodiment, the alarm circuit 300 is configured to detect the hydrogen content, the gas pressure value, or the gas pressure variation in the cavity 101, and perform early warning. The alarm circuit 300 can respond quickly to notify the staff to perform maintenance to prevent a large amount of leaked hydrogen from accumulating.
Referring to fig. 7, the present application provides an active safety protection method for a hydrogen pipeline. The active safety protection method for the hydrogen pipeline is implemented by using the active safety protection device 10 for the hydrogen pipeline in any one of the above embodiments. The active safety protection method for the hydrogen pipeline comprises the following steps:
s10, wrapping the joint of the hydrogen transportation pipe 20 with the shell 100, and disposing the first flexible sealing member 200 between the shell 100 and the hydrogen transportation pipe 20 to form the sealed cavity 101. In step S10, an environment of the cavity 101 with insulation sealing can be achieved by using the housing 100 and the first flexible sealing member 200. The shape and size of the housing 100 are not particularly limited as long as the portion of the hydrogen transport pipe 20 that is susceptible to leakage is secured inside the housing 100. The first flexible sealing element 200 may be made of rubber, resin, plastic, or silicone.
S20, when the hydrogen in the hydrogen transportation pipeline 20 leaks from the joint portion of the hydrogen transportation pipeline 20 into the cavity 101, detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101 by using the alarm circuit 300, and adsorbing the hydrogen in the cavity 101 by using the hydrogen adsorbing member 500. In step S20, when hydrogen leaks from the joint of the hydrogen transportation pipeline 20, the hydrogen concentration will be quickly increased and the gas pressure will be quickly increased due to the small internal space of the hydrogen pipeline active safety device 10, so that the alarm circuit 300 can respond quickly. The alarm circuit 300 may detect a hydrogen concentration, a gas pressure value, or a gas pressure variation. The hydrogen adsorbing member 500 is disposed adjacent to the first flexible sealing member 200 on the inner sidewall of the housing 100. The hydrogen absorption member 500 may be disposed on the entire inner wall of the insulation sealing chamber 101. The hydrogen adsorbing member 500 may be disposed only at a position adjacent to the first flexible sealing member 200. The hydrogen absorbing member 500 is made of any one or more of ferrotitanium, ferrotitanium-carbon alloy, calcium-manganese-nickel-aluminum alloy, rare earth lanthanum-nickel, complex, carbonaceous material or other hydrogen absorbing material.
S30, when the alarm circuit 300 detects that the hydrogen content, the gas pressure value, or the gas pressure variation in the chamber 101 is greater than a preset value, an alarm is given. In step S30, the preset value may be arbitrarily set empirically. The alarm circuit 300 can prompt for maintenance in a color, sound, light or electrical signal manner.
In one alternative embodiment, when the detector in the alarm circuit 300 is a hydrogen concentration detector, the step of detecting the hydrogen content in the cavity 101 by using the alarm circuit 300 when the hydrogen in the hydrogen transportation pipe 20 leaks into the cavity 101 from the joint part of the hydrogen transportation pipe 20 at S20 comprises:
when hydrogen in the hydrogen transport pipe 20 leaks from the joint portion of the hydrogen transport pipe 20 into the chamber 101, the hydrogen concentration in the chamber 101 is detected by a hydrogen concentration detector.
In one optional embodiment, when the detector in the alarm circuit 300 is a gas pressure value detector, the step S20 of detecting the hydrogen content in the cavity 101 by using the alarm circuit 300 when the hydrogen in the hydrogen transportation pipeline 20 leaks from the joint part of the hydrogen transportation pipeline 20 into the cavity 101 includes:
when the hydrogen gas in the hydrogen transport pipe 20 leaks from the joint portion of the hydrogen transport pipe 20 into the chamber 101, the gas pressure in the chamber 101 is detected by a gas pressure value detector.
In this embodiment, an insulating and sealing environment is formed in the cavity 101. The alarm circuit 300 is disposed in the cavity 101. The alarm circuit 300 is used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101 and carrying out early warning. According to the hydrogen pipeline active safety protection method, the environment capable of restraining the leaked hydrogen is manufactured at the position where leakage is easy to occur, so that hydrogen can be prevented from escaping, the alarm circuit 300 can respond quickly to inform workers of overhauling, the leaked hydrogen is prevented from gathering in a large amount, and the leaked hydrogen is adsorbed by the hydrogen adsorbing piece 500 in time before reaching the explosion limit, so that accidents are effectively prevented.
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 claims. 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 (11)
1. An active safety device for a hydrogen pipeline, comprising:
the hydrogen transportation device comprises a shell (100), wherein a cavity (101) is formed in the shell, a hydrogen transportation pipeline (20) is arranged in the cavity (101), and the shell (100) is detachably connected with the hydrogen transportation pipeline (20);
a first flexible seal (200) disposed within the cavity (101) to form an insulating sealed environment within the cavity (101);
the alarm circuit (300) is arranged in the cavity (101) and used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101) and carrying out early warning; and
the hydrogen adsorption piece (500) is arranged in the cavity (101) and is used for adsorbing hydrogen in the cavity (101).
2. The active safety shield in hydrogen pipelines according to claim 1, characterized in that the hydrogen-adsorbing member (500) is disposed on the inside wall of the housing (100) adjacent to the first flexible seal (200).
3. The active safety device of hydrogen pipeline according to claim 2, wherein the material of the hydrogen absorbing member (500) is any one or more of ferrotitanium, ferrotitanium carbon, calcium manganese nickel aluminum, rare earth lanthanum nickel, complex, carbonaceous material or other hydrogen absorbing material.
4. The active safety device in hydrogen gas pipeline according to claim 1, characterized in that the housing (100) has an opening (102) extending through the housing (100) in the direction of extension of the hydrogen transport pipeline (20), the opening (102) being used to place the hydrogen transport pipeline (20) in the cavity (101).
5. The active safety shield of hydrogen pipeline of claim 4, further comprising:
the buckle (110) is fixedly arranged on the outer side wall of the shell (100); and
and one end of the clamping ring (120) is fixedly arranged on the outer side wall of the shell (100), the clamping ring (120) and the buckle (110) are arranged at two ends of the opening (102) at intervals, and when the other end of the clamping ring (120) is clamped on the buckle (110), the opening (102) is closed by pressing the clamping ring (120).
6. The active safety shield of hydrogen pipeline of claim 4, further comprising:
a second flexible seal (400) disposed at the opening (102) of the housing (100).
7. The active safety shield in hydrogen pipelines according to claim 6, wherein the first flexible seal (200) and the second flexible seal (400) are integrally formed, and the material of the first flexible seal (200) and the material of the second flexible seal (400) are each any one of rubber material, resin material, plastic material, silicone material or other flexible sealing material.
8. The active safety shield of hydrogen gas pipeline according to claim 1, wherein the alarm circuit (300) comprises:
the detector (310) is arranged in the cavity (101) and used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101); and
and the alarm (320) is electrically connected with the detector (310), and sends an alarm signal to the alarm (320) when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector (310) is greater than a preset value.
9. The active safety device of hydrogen gas pipeline according to claim 8, wherein the detector (310) is any one of a hydrogen concentration detector, a gas pressure value detector, or a gas pressure change detector.
10. The active safety device of hydrogen gas pipeline according to claim 8, wherein the alarm (320) is one or more of a warning light or a buzzer.
11. A hydrogen pipeline active safety protection method, characterized in that the hydrogen pipeline active safety protection method is realized by using the hydrogen pipeline active safety protection device (10) of any one of claims 1 to 10, and the hydrogen pipeline active safety protection method comprises:
s10, wrapping the joint of the hydrogen transportation pipeline (20) by using a shell (100), and arranging a first flexible sealing member (200) between the shell (100) and the hydrogen transportation pipeline (20) to form a sealed cavity (101);
s20, detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101) by using the alarm circuit (300), and adsorbing the hydrogen in the cavity (101) through the hydrogen adsorption piece (500);
s30, when the alarm circuit (300) detects that the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101) is larger than a preset value, alarming is carried out.
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Application publication date: 20200515 |