CN111157679A - Hydrogen pipeline detection system - Google Patents

Hydrogen pipeline detection system Download PDF

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Publication number
CN111157679A
CN111157679A CN201911404810.2A CN201911404810A CN111157679A CN 111157679 A CN111157679 A CN 111157679A CN 201911404810 A CN201911404810 A CN 201911404810A CN 111157679 A CN111157679 A CN 111157679A
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hydrogen
pipeline
detection system
detection signal
space
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杨福源
胡松
杨明烨
王天泽
江亚阳
***
李建秋
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Tsinghua University
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Tsinghua University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/005H2
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00Protection or supervision of installations
    • F17D5/005Protection or supervision of installations of gas pipelines, e.g. alarm
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00Protection or supervision of installations
    • F17D5/02Preventing, monitoring, or locating loss
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • G01N33/0063General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
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Abstract

The application relates to a hydrogen pipeline detection system, which comprises a first hydrogen pipeline, a protective cover, a hydrogen sensor, an alarm device, a power supply, a first switch, an amplifying circuit and a driving device. The first hydrogen pipeline is used for communicating with the hydrogen tank. The first hydrogen line includes a joint structure. The joint structure is sleeved on the protection cover. The hydrogen sensor is arranged on the protective cover. The hydrogen sensor generates a detection signal. The amplifying circuit is used for amplifying the detection signal. The driving device receives the amplified detection signal. When the hydrogen concentration in the protective cover exceeds the concentration preset value once, the driving device controls the movable contact to be continuously contacted with the fixed contact according to the detection signal so as to continuously conduct the power supply and the alarm device. The alarm device continuously alarms, so that operators can find leakage in time and perform related operations. The hydrogen pipeline detection system avoids the condition that operators cannot find the hydrogen pipeline in time due to intermittent alarm in the prior art, and improves the safety of the hydrogen pipeline.

Description

Hydrogen pipeline detection system
Technical Field
The application relates to the technical field of new energy, in particular to a hydrogen pipeline detection system.
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 way of storing energy: the electric energy is converted into chemical energy to be stored in the hydrogen during the power generation peak period of the renewable energy source, and the energy carried by the hydrogen is converted into the electric energy again for use through the fuel cell during the power utilization peak period. Therefore, the technologies of hydrogen preparation, storage, transportation and the like are regarded by relevant researchers.
The hydrogen is a very flammable and explosive gas, and when the volume fraction of the hydrogen in the air exceeds 4-75%, the hydrogen meets a fire source to cause explosion. Therefore, how to improve the safety of the hydrogen pipeline in the transportation and storage process of hydrogen is an urgent problem to be solved.
Disclosure of Invention
In view of the above, it is necessary to provide a hydrogen pipeline detection system for improving the safety of the hydrogen pipeline.
A hydrogen pipeline detection system comprises a first hydrogen pipeline, a protective cover, a hydrogen sensor, an alarm device, a power supply, a first switch, an amplification circuit and a driving device.
The first hydrogen pipeline is used for being communicated with a hydrogen tank. The first hydrogen pipeline comprises a plurality of gas conveying pipes and a plurality of joint structures. Two adjacent gas-supply pipes pass through one the joint design is connected. The protective cover surrounds and forms a first space. The first hydrogen pipe passes through the protective cover, and the joint structure is provided in the first space. The hydrogen sensor is disposed in the first space. The hydrogen sensor is used for detecting the hydrogen concentration of the first space and generating a detection signal.
The power supply is electrically connected with the alarm device to form a closed loop. The first switch includes a fixed contact and a movable contact. The fixed contact is connected to the closed loop. The amplifying circuit comprises a signal input end, a signal output end and a power supply end. The power end is connected with the power supply. The signal input end is connected with the hydrogen sensor. The amplifying circuit is used for amplifying the detection signal.
The signal output end and the movable contact are respectively connected with the driving device. The driving device receives the amplified detection signal. When the hydrogen concentration in the protective cover exceeds a preset concentration value once, the driving device controls the movable contact to be continuously contacted with the fixed contact according to the detection signal so as to continuously conduct the power supply and the alarm device.
In one embodiment, the drive means comprises an electromagnetic release, a spring, a first lock lever, a second lock lever and a lever. The electromagnetic trip includes a power input and a power output. The power input end is electrically connected with the signal output end. One end of the spring is fixedly arranged relative to the first hydrogen pipeline. The other end is connected with the movable contact.
The first lock lever includes a first connection end and a second connection end. The first connecting end is connected with the movable contact. The second connecting end is of a hook-shaped structure. The second lock rod includes a third connection end and a fourth connection end. The third connecting end is hinged and fixed relative to the first hydrogen pipeline. The fourth connecting end is of a hook-shaped structure. The second connecting end is buckled with the fourth connecting end. One end of the lever is fixedly connected between the third connecting end and the fourth connecting end. The other end of the lever is close to the power output end.
The power input end receives the amplified detection signal, when the amplified detection signal exceeds a preset voltage value once, the power output end of the electromagnetic release rotates, the power output end pushes the lever to move, the lever pushes the first locking rod to rotate, the second connecting end and the fourth connecting end are unlocked, the spring contracts and drives the movable contact to be in contact with the fixed contact, and the power supply is continuously conducted with the alarm device.
In one embodiment, the electromagnetic trip includes a coil, a core, and an armature. The coil includes the power input. The iron core comprises a fixed end and a working end. The coil is wound on the iron core and is close to the fixed end. One end of the armature is hinged with the fixed end. The other end of the armature is the power output end. The power input end receives the amplified detection signal, when the amplified detection signal exceeds a preset voltage value once, the armature rotates around the fixed end, the armature is adsorbed by the iron core, and the power output end pushes the lever to move.
In one embodiment, the hydrogen pipeline detection system further comprises a collection canister. The collection tank is in communication with the first space.
In one embodiment, the collection tank comprises a tank body. The tank includes a hydrogen inlet. The hydrogen inlet is in communication with the first space. The tank body forms a storage space around the tank body. The storage space is used for accommodating a hydrogen gas adsorbing material.
In one embodiment, the storage space houses a hydrogen gas adsorbing material. The hydrogen adsorbing material is a physical adsorbing material or a chemical adsorbing material.
In one embodiment, the collection canister further comprises an adsorbent carrier. The adsorption carrier is accommodated in the storage space. The adsorption carrier is of a net structure. The adsorption carrier is used for accommodating the hydrogen gas adsorption material.
In one embodiment, the collection tank is a cylindrical structure. The cylindrical structure includes side plates and a top plate. The hydrogen inlet is arranged on the top plate, and the collecting tank further comprises a plurality of partition plates. The plurality of partition plates are accommodated in the storage space, and the plurality of partition plates are disposed at the side plates at intervals. The hydrogen adsorbing material is disposed in the storage space between the separators.
In one embodiment, the hydrogen pipeline detection system further comprises a gas pipeline and a filter sheet. One end of the gas transmission pipeline is connected with the hydrogen inlet. The other end of the gas transmission pipeline is communicated with the first space. The filter disc set up in the gas transmission pipeline, just the filter disc is close to the safety cover.
In one embodiment, the hydrogen pipeline detection system further comprises a second hydrogen pipeline comprising a second end and a two-position, three-way solenoid valve. The two-position three-way electromagnetic valve comprises a first inlet, a first outlet, a second outlet and a first control end. The first inlet is used for being communicated with a hydrogen tank. The gas delivery pipe adjacent to the hydrogen tank includes a first end. The first end is in communication with the first outlet. The second outlet communicates with the second end. The first control end and the alarm device are connected in parallel to the closed loop. The driving device controls the movable contact to be continuously contacted with the fixed contact according to the detection signal so as to enable the first inlet to be communicated with the second outlet.
In one embodiment, the hydrogen circuit detection system further comprises a first one-way valve and a second one-way valve. The first check valve is arranged on the first hydrogen pipeline and close to the first end. The second one-way valve is arranged on the second hydrogen pipeline and close to the second end.
The embodiment of the application provides a hydrogen pipeline detecting system includes first hydrogen pipeline, safety cover, hydrogen sensor, alarm device, power, first switch, amplifier circuit and drive arrangement. The first hydrogen pipeline is used for being communicated with a hydrogen tank. The first hydrogen pipeline comprises a plurality of gas conveying pipes and a plurality of joint structures. Two adjacent gas-supply pipes pass through one the joint design is connected. The protective cover surrounds and forms a first space. The joint structure is sleeved in the first space. The hydrogen sensor is disposed in the first space. The hydrogen sensor is used for detecting the hydrogen concentration of the first space and generating a detection signal.
The power supply is electrically connected with the alarm device to form a closed loop. The first switch includes a fixed contact and a movable contact. The fixed contact is connected to the closed loop. The amplifying circuit comprises a signal input end, a signal output end and a power supply end. The power end is connected with the power supply. The signal input end is connected with the hydrogen sensor. The amplifying circuit is used for amplifying the detection signal.
The signal output end and the movable contact are respectively connected with the driving device. The driving device receives the amplified detection signal. When the hydrogen concentration in the protective cover exceeds a preset concentration value once, the driving device controls the movable contact to be continuously contacted with the fixed contact according to the detection signal so as to continuously conduct the power supply and the alarm device.
In the hydrogen pipeline detection system, the protective cover forms a closed environment, so that the detection accuracy of the hydrogen sensor is improved, and the safety of the hydrogen pipeline is further improved. Furthermore, the driving device in the hydrogen pipeline detection system controls the movable contact to continuously contact with the fixed contact according to the detection signal, so that the power supply is continuously conducted with the alarm device. The alarm device continuously gives an alarm, so that operators can find leakage in time and perform related operations. The hydrogen pipeline detection system avoids the condition that operators cannot find the hydrogen pipeline in time due to intermittent alarm in the prior art, and improves the safety of the hydrogen pipeline.
Drawings
Fig. 1 is a schematic structural diagram of the hydrogen pipeline detection system provided in one embodiment of the present application;
FIG. 2 is a schematic diagram of the electrical connections of the hydrogen pipeline detection system provided in one embodiment of the present application;
fig. 3 is a schematic structural diagram of the hydrogen pipeline detection system provided in another embodiment of the present application;
FIG. 4 is a schematic diagram of the construction of the collection tank provided in one embodiment of the present application;
FIG. 5 is a schematic structural view of the collection tank provided in another embodiment of the present application;
FIG. 6 is a schematic structural view of the collection tank provided in another embodiment of the present application;
fig. 7 is a schematic structural view of the collection tank provided in another embodiment of the present application.
Reference numerals:
hydrogen pipeline detection system 10
Hydrogen tank 100
First hydrogen line 20
Joint structure 201
First end 202
Gas delivery pipe 220
Protective cover 30
First space 301
Collection tank 40
Tank 410
Hydrogen inlet 411
Storage space 412
Hydrogen gas adsorbing material 400
Adsorption carrier 420
Side plate 413
Top plate 414
Partition 430
Center shaft 415
Airway tube 440
Air hole 441
Gas transmission pipeline 450
Filter 460
Hydrogen sensor 50
Power supply 610
First switch 620
Fixed contact 621
Moving contact 622
Amplifying circuit 630
Signal input terminal 631
Signal output terminal 632
Power supply terminal 633
Alarm device 70
Two-position three-way solenoid valve 80
First inlet 801
First outlet 802
Second outlet 803
First control terminal 804
A second hydrogen line 90
Second end 901
First check valve 110
Second check valve 120
Driving device 500
Electromagnetic release 510
Power input 501
Power take off 502
Coil 511
Iron core 512
Fixed end 503
Working end 504
Armature 513
Spring 520
Wall 101
First lock bar 530
First connection end 531
Second connection end 532
Second locking bar 540
Third connecting end 541
Fourth connecting end 542
Lever 550
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.
The numbering of the components as such, e.g., "first", "second", etc., is used herein for the purpose of describing the objects only, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 and fig. 2, a hydrogen pipeline detection system 10 according to an embodiment of the present disclosure includes a first hydrogen pipeline 20, a protective cover 30, a hydrogen sensor 50, an alarm device 70, a power source 610, a first switch 620, an amplifying circuit 630, and a driving device 500.
The first hydrogen line 20 is used for communicating with the hydrogen tank 100. The first hydrogen pipeline 20 includes a plurality of gas delivery pipes 220 and a plurality of joint structures 201. Two adjacent gas pipes 220 are connected through one joint structure 201. The protective cover 30 surrounds and forms a first space 301. The joint structure 201 is sleeved in the first space 301. The hydrogen sensor 50 is disposed in the first space 301. The hydrogen sensor 50 is configured to detect the hydrogen concentration in the first space 301 and generate a detection signal.
The power supply 610 is electrically connected to the alarm device 70 to form a closed loop. The first switch 620 includes a fixed contact 621 and a movable contact 622. The fixed contact 621 is connected to the closed loop. The amplifying circuit 630 includes a signal input terminal 631, a signal output terminal 632, and a power supply terminal 633. The power source terminal 633 is connected to the power source 610. The signal input 631 is connected to the hydrogen sensor 50. The amplifying circuit 630 is configured to amplify the detection signal.
The signal output terminal 632 and the movable contact 622 are respectively connected to the driving device 500. The driving device 500 receives the amplified detection signal. When the hydrogen concentration in the protective cover 30 exceeds the preset concentration value once, the driving device 500 controls the movable contact 622 to continuously contact with the fixed contact 621 according to the detection signal, so that the power supply 610 is continuously conducted with the alarm device 70.
The embodiment of the application provides in the hydrogen pipeline detecting system 10 the protection cover 301 forms a closed environment, so that the accuracy of detection of the hydrogen sensor 50 is improved, and the safety of the hydrogen pipeline is further improved. Further, the driving device 500 in the hydrogen pipeline detecting system 10 controls the movable contact 622 to continuously contact with the fixed contact 621 according to the detection signal, so that the power supply 610 is continuously conducted with the alarm device 70. The alarm device 70 continuously alarms, so that the operator can find the leakage in time and perform related operations. The hydrogen pipeline detection system 10 avoids the situation that in the prior art, an operator cannot find the hydrogen pipeline in time due to intermittent alarm, and improves the safety of the hydrogen pipeline.
In one embodiment, the driving device 500 includes an electromagnetic release 510, a spring 520, a first lock lever 530, a second lock lever 540, and a lever 550. The electromagnetic trip 510 includes a power input 501 and a power output 502. The power input terminal 501 is electrically connected to the signal output terminal 632. One end of the spring 520 is fixedly disposed with respect to the first hydrogen line 20. The other end is connected to the moving contact 622.
The first lock lever 530 includes a first connection end 531 and a second connection end 532. The first connection end 531 is connected to the movable contact 622. The second connection end 532 has a hook-shaped structure. The second locking bar 540 includes a third connection end 541 and a fourth connection end 542. The third connection end 541 is fixed to the first hydrogen line 20 in an articulated manner. The fourth connecting end 542 has a hook-shaped structure. The second connecting end 532 is fastened to the fourth connecting end 542. One end of the lever 550 is fixedly connected between the third connecting end 541 and the fourth connecting end 542. The other end of the lever 550 is close to the power take-off 502.
The power input end 501 receives the amplified detection signal, when the amplified detection signal exceeds a preset voltage value once, the power output end 502 of the electromagnetic release 510 rotates, the power output end 502 pushes the lever 550 to move, the lever 550 pushes the first lock lever 530 to rotate, the second connecting end 532 is unlocked from the fourth connecting end 542, the spring 520 contracts and drives the movable contact 622 to contact with the fixed contact 621, and the power supply 610 is continuously conducted with the alarm device 70.
The driving device 500 adopts a mechanical mechanism to control the closing of the fixed contact 621 and the movable contact 622 of the first switch 620, so as to improve the contact stability.
In one embodiment, the electromagnetic trip 510 includes a coil 511, a core 512, and an armature 513. The coil 511 comprises the power input 501. The core 512 includes a fixed end 503 and a working end 504. The coil 511 is wound around the iron core 512 and is close to the fixed end 503. One end of the armature 513 is hinged to the fixed end 503. The other end of the armature 513 is the power output end 502.
The power input 501 receives the amplified detection signal. When the amplified detection signal once exceeds a preset voltage value, the armature 513 rotates around the fixed end 503, the armature 513 is adsorbed by the iron core 512, and the power output end 502 pushes the lever 550 to move.
The coil 511 is wound around the core 512. When a current flows through the coil 511, the core 512 generates a magnetic field. The armature 513 is attracted by a magnetic field.
Referring also to fig. 3, in one embodiment, the hydrogen pipeline detection system 10 further includes a collection tank 40. The collection tank 40 communicates with the first space 301.
The collecting tank 40 is convenient for guiding out leaked hydrogen in time, so that the hydrogen is far away from a leakage point, the possibility of explosion of the leakage point is reduced, and the safety of a hydrogen pipeline is improved.
In one embodiment, the collection canister 40 is disposed on a side of the protective cover 30 away from the ground. The mass of hydrogen is lighter than the other components in air. When the hydrogen gas leaks, the hydrogen gas gradually rises to a position where the first space 301 is far from the ground. The collection tank 40 is arranged on one side of the protection cover 30 far away from the ground, so that more hydrogen can be ensured to be led into the collection tank 40, and the concentration of the hydrogen in the first space 301 is reduced.
The collection tank 40 allows the concentration of hydrogen gas in the first space 301 to be reduced. At this time, the hydrogen sensor 50 no longer emits the detection signal. Because the driving device 500 is disposed in the hydrogen pipeline detecting system 10, the driving device 500 controls the movable contact 622 to continuously contact with the fixed contact 621 according to the detection signal, so that the power supply 610 is continuously conducted with the alarm device 70. The alarm device 70 continuously alarms, so that the operator can find the leakage in time and perform related operations. The hydrogen pipeline detection system 10 avoids the situation that in the prior art, an operator cannot find the hydrogen pipeline in time due to intermittent alarm, and improves the safety of the hydrogen pipeline.
The shape of the collection tank 40 is not limited. The collection tank 40 may be in a regular shape such as a cube, a rectangular parallelepiped, or a cylinder, or may be irregular.
The shape of the protective cover 30 is not limited. The shape of the protective cover 30 may be regular, such as a cube, a cuboid, or a cylinder, or irregular.
In one embodiment, the material and thickness of the boot 30 is designed according to the pipeline requirements.
In one embodiment, the protective cover 30 is preferably a plexiglass material having a thickness of about 0.5cm to prevent hydrogen gas from diffusing into the surrounding air and accumulating.
Referring also to fig. 4, in one embodiment, the collection tank 40 includes a tank body 410. The tank 410 includes a hydrogen inlet 411. The hydrogen inlet 411 communicates with the first space 301. The can 410 encloses a storage space 412. The storage space 412 is used to receive the hydrogen adsorbing material 400. The hydrogen adsorbing material 400 serves to adsorb the leaked hydrogen, thereby improving the hydrogen collecting efficiency of the collecting tank 40. Accumulation of hydrogen gas near the joint structure 201 is effectively prevented. The hydrogen leakage adsorption system 10 prevents hydrogen from accumulating near the joint structure 201, and improves the safety of the hydrogen pipeline.
In one embodiment, the storage space 412 receives the hydrogen adsorbing material 400. The hydrogen adsorbing material 400 is a physical adsorbing material or a chemical adsorbing material.
The physical adsorption material may be activated carbon or zeolite. The active carbon and the zeolite both have a structure containing a large number of micropores, and have large porosity, large specific surface area and good hydrogen absorption performance.
The chemical adsorbent material may be a hydrogen storage alloy or a complex hydride. The hydrogen storage alloy may be LaNi5(rare earth-based hydrogen storage alloy) or Mg2Ni (magnesium-based hydrogen storage alloy). When hydrogen gas comes into contact with the hydrogen occluding alloy, it is decomposed into H atoms on the surface thereof. The H atoms diffuse into the alloy and react with the alloy to form metal hydrides. So that the hydrogen storage alloy achieves the purpose of absorbing hydrogen. LaNi5React with hydrogen to generate LaNi5H6,Mg2Reaction of Ni with hydrogen to form Mg2NiH4
In one embodiment, the collection canister 40 further includes an adsorbent carrier 420. The adsorption carrier 420 is received in the storage space 412. The adsorption carrier 420 has a mesh structure. The adsorption carrier 420 is configured to accommodate the hydrogen gas adsorbent 400. The adsorption carrier 420 is convenient for enlarging the contact area of the hydrogen adsorption material 400 and hydrogen, improves the hydrogen adsorption efficiency, and effectively avoids the accumulation of hydrogen near the joint structure 201.
Referring also to fig. 5, in one embodiment, the collection tank 40 is a cylindrical structure. The cylindrical structure includes side plates 413 and a top plate 414. The hydrogen gas inlet 411 is provided to the top plate 414, and the collection tank 40 further includes a plurality of separators 430. The plurality of partitions 430 are received in the storage space 412, and the plurality of partitions 430 are spaced apart from each other on the side plate 413. The hydrogen adsorbing material 400 is disposed in the storage space 412 between the separators 430.
The plurality of partitions 430 divides the storage space 412 into a plurality of spaces. Compared to the case where the hydrogen adsorbent 400 is directly deposited in the storage space 412, the hydrogen adsorbent 400 is disposed in the storage space 412 between the separators 430, which is advantageous for sufficient contact between hydrogen and the hydrogen adsorbent 400, thereby improving the hydrogen adsorption efficiency.
In one embodiment, the cylindrical structure includes a central shaft 415. The plurality of separators 430 are alternately disposed on the side plate 413 of the cylindrical structure in the extending direction of the central shaft 415, so that hydrogen gas can be sufficiently contacted with the hydrogen adsorbing material 400.
Referring also to fig. 6, in one embodiment, the collection tank 40 further includes a gas conduit 440. The air duct 440 is received in the storage space 412. One end of the gas guide tube 440 is communicated with the hydrogen inlet 411. The other end of the air duct 440 extends to the bottom of the tank 410. The air duct 440 is provided with an air hole 441. The gas conduit 440 facilitates the flow of hydrogen gas to the bottom of the cylindrical structure. The air hole 441 is formed in the air duct 440, so that hydrogen can be in uniform contact with the hydrogen adsorbing material 400, and a part of the hydrogen adsorbing material 400 is prevented from adsorbing.
Referring to fig. 7, in one embodiment, the gas guide tube 440 has a spiral structure, which increases a diffusion path of hydrogen gas in the storage space 412, increases a hydrogen gas diffusion area, and increases a contact area of the hydrogen adsorbing material 400 and hydrogen gas.
In one embodiment, the hydrogen pipeline detection system 10 further includes an air pipeline 450 and a filter 460. One end of the gas transmission pipeline 450 is connected with the hydrogen inlet 411. The other end of the air pipe 450 communicates with the first space 301. The filter 460 is disposed in the air pipe 450, and the filter 460 is close to the protective cover 30.
The filter sheet 460 effectively prevents the hydrogen adsorbing material 400 from entering the protection cap 30.
In one embodiment, the hydrogen pipeline detection system 10 further includes a second hydrogen pipeline 90 and a two-position, three-way solenoid valve 80. The second hydrogen line 90 comprises a second end 901. The two-position three-way solenoid valve 80 includes a first inlet 801, a first outlet 802, a second outlet 803, and a first control end 804. The first inlet 801 is adapted to communicate with the hydrogen tank 100. The gas delivery conduit 220 adjacent to the hydrogen gas tank 100 includes a first end 202. The first end 202 is in communication with the first outlet 802. The second outlet 803 communicates with the second end 901. The first control terminal 804 is connected to the closed loop in parallel with the alarm device 70. The driving device 500 controls the movable contact 622 to continuously contact with the fixed contact 621 according to the detection signal, so that the first inlet 801 is communicated with the second outlet 803.
When the first hydrogen pipeline 20 leaks hydrogen, the hydrogen pipeline system 10 delivers hydrogen through the second hydrogen pipeline 90, so as to block the leakage source and avoid the hydrogen from leaking continuously. The hydrogen pipeline system 10 improves the safety of the hydrogen pipeline.
In one embodiment, the hydrogen circuit detection system 10 further includes a first one-way valve 110 and a second one-way valve 120. The first check valve 110 is disposed in the first hydrogen pipeline 20 and near the first end 202. The second check valve 120 is disposed in the second hydrogen line 90 and near the second end 901.
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-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of 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. A hydrogen circuit detection system, comprising:
the first hydrogen pipeline (20), the first hydrogen pipeline (20) is used for communicating with a hydrogen tank (100), the first hydrogen pipeline (20) comprises a plurality of gas conveying pipes (220) and a plurality of joint structures (201), and two adjacent gas conveying pipes (220) are connected through one joint structure (201);
a protective cover (30) surrounding a first space (301), wherein the joint structure (201) is sleeved in the first space (301);
a hydrogen sensor (50) disposed in the first space (301), the hydrogen sensor (50) being configured to detect a hydrogen concentration in the first space (301) and generate a detection signal;
an alarm device (70);
a power supply (610) electrically connected to the alarm device (70) to form a closed loop;
a first switch (620) including a fixed contact (621) and a movable contact (622), the fixed contact (621) being connected to the closed loop;
the amplifying circuit (630) comprises a signal input end (631), a signal output end (632) and a power supply end (633), the power supply end (633) is connected with the power supply (610), the signal input end (631) is connected with the hydrogen sensor (50), and the amplifying circuit (630) is used for amplifying the detection signal;
the signal output end (632) and the movable contact (622) are respectively connected with the driving device (500), the driving device (500) receives the amplified detection signal, and when the concentration of hydrogen in the protective cover (30) exceeds a preset concentration value once, the driving device (500) controls the movable contact (622) to be in continuous contact with the fixed contact (621) according to the detection signal so as to enable the power supply (610) to be in continuous conduction with the alarm device (70).
2. The hydrogen circuit detection system of claim 1, wherein the drive means (500) comprises:
an electromagnetic trip (510) comprising a power input (501) and a power output (502), the power input (501) electrically connected with the signal output (632);
a spring (520), one end of the spring (520) is fixedly arranged relative to the first hydrogen pipeline (20), and the other end of the spring is connected with the movable contact (622);
the first lock rod (530), the first lock rod (530) includes a first connection end (531) and a second connection end (532), the first connection end (531) is connected with the movable contact (622), and the second connection end (532) is in a hook-shaped structure;
the second locking rod (540) comprises a third connecting end (541) and a fourth connecting end (542), the third connecting end (541) is hinged and fixed relative to the first hydrogen pipeline (20), the fourth connecting end (542) is of a hook-shaped structure, and the second connecting end (532) is buckled with the fourth connecting end (542);
one end of the lever (550) is fixedly connected between the third connecting end (541) and the fourth connecting end (542), and the other end of the lever (550) is close to the power output end (502); and
the power input end (501) receives the amplified detection signal, when the amplified detection signal exceeds a voltage preset value once, the power output end (502) of the electromagnetic trip (510) rotates, the power output end (502) pushes the lever (550) to move, the lever (550) pushes the first locking rod (530) to rotate, the second connecting end (532) is buckled with the fourth connecting end (542), the spring (520) contracts and drives the movable contact (622) to be contacted with the fixed contact (621), and the power supply (610) is continuously conducted with the alarm device (70).
3. The hydrogen circuit detection system of claim 2, wherein the electromagnetic trip (510) comprises:
a coil (511) comprising the power input (501);
a core (512), the core (512) comprising a fixed end (503) and a working end (504), the coil (511) being wound around the core (512) and being close to the fixed end (503); and
an armature (513), one end of the armature (513) is hinged to the fixed end (503), and the other end of the armature (513) is the power output end (502);
the power input end (501) receives the amplified detection signal, when the amplified detection signal exceeds a preset voltage value once, the armature (513) rotates around the fixed end (503), the armature (513) is adsorbed by the iron core (512), and the power output end (502) pushes the lever (550) to move.
4. The hydrogen circuit detection system of claim 1, further comprising:
a collection tank (40) in communication with the first space (301).
5. The hydrogen circuit detection system according to claim 4, wherein the collection tank (40) comprises a tank body (410), the tank body (410) comprises a hydrogen gas inlet (411), the hydrogen gas inlet (411) is communicated with the first space (301), and the tank body (410) is enclosed to form a storage space (412), and the storage space (412) is used for accommodating the hydrogen adsorbing material (400).
6. The hydrogen circuit detection system of claim 5, wherein the storage space (412) houses a hydrogen adsorbing material (400), and the hydrogen adsorbing material (400) is a physical adsorbing material or a chemical adsorbing material.
7. The hydrogen circuit detection system of claim 5, wherein the collection canister (40) further comprises:
an adsorption carrier (420), the adsorption carrier (420) being received in the storage space (412), the adsorption carrier (420) having a mesh structure, the adsorption carrier (420) being configured to receive the hydrogen gas adsorption material (400).
8. The hydrogen circuit detection system according to claim 7, wherein the collection tank (40) is a cylindrical structure including a side plate (413) and a top plate (414), the hydrogen gas inlet (411) is provided to the top plate (414), and the collection tank (40) further includes:
and a plurality of separators (430), wherein the plurality of separators (430) are accommodated in the storage space (412), the plurality of separators (430) are spaced apart from the side plates (413), and the hydrogen adsorbing material (400) is disposed in the storage space (412) between the separators (430).
9. The hydrogen circuit detection system of claim 5, further comprising:
one end of the gas transmission pipeline (450) is connected with the hydrogen inlet (411), and the other end of the gas transmission pipeline (450) is communicated with the first space (301);
the filter sheet (460) is arranged on the air conveying pipeline (450), and the filter sheet (460) is close to the protective cover (30).
10. The hydrogen circuit detection system of claim 1, further comprising:
a second hydrogen line (90) comprising a second end (901);
the two-position three-way electromagnetic valve (80) comprises a first inlet (801), a first outlet (802), a second outlet (803) and a first control end (804), wherein the first inlet (801) is used for being communicated with a hydrogen tank (100), the gas conveying pipe (220) close to the hydrogen tank (100) comprises a first end (202), the first end (202) is communicated with the first outlet (802), the second outlet (803) is communicated with the second end (901), and the first control end (804) and the alarm device (70) are connected in parallel to the closed loop;
the driving device (500) controls the movable contact (622) to be in continuous contact with the fixed contact (621) according to the detection signal so as to enable the first inlet (801) to be communicated with the second outlet (803).
11. The hydrogen circuit detection system of claim 10, further comprising:
a first one-way valve (110) disposed in the first hydrogen line (20) proximate the first end (202);
a second one-way valve (120) disposed in the second hydrogen line (90) proximate the second end (901).
CN201911404810.2A 2019-12-30 2019-12-30 Hydrogen pipeline detection system Pending CN111157679A (en)

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Application publication date: 20200515