CN114994422A - Hydrogen natural emptying and electrostatic safety monitoring mutual feedback reaction protection system - Google Patents
Hydrogen natural emptying and electrostatic safety monitoring mutual feedback reaction protection system Download PDFInfo
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 99
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 99
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 99
- 238000003860 storage Methods 0.000 claims abstract description 21
- 238000009825 accumulation Methods 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000001788 irregular Effects 0.000 claims abstract description 6
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 103
- 229910052757 nitrogen Inorganic materials 0.000 claims description 49
- 238000001514 detection method Methods 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000003750 conditioning effect Effects 0.000 claims description 19
- 230000006399 behavior Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 10
- 238000010926 purge Methods 0.000 claims description 10
- 238000013022 venting Methods 0.000 claims description 10
- 150000002431 hydrogen Chemical class 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 4
- 238000007599 discharging Methods 0.000 claims 2
- 239000003345 natural gas Substances 0.000 claims 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
-
- 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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- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to the technical field of hydrogen natural emptying safety processing, in particular to a hydrogen natural emptying and static safety monitoring mutual feedback reaction protection system which comprises a hydrogen storage and transportation device, a nitrogen containing grid, an emptying system air inlet pipe, a hydrogen emptying pipe main body, a static measurement system, an infrared camera, a computer and a signal acquisition system. According to the invention, by monitoring the state parameters and the static accumulation behavior of the emptying pipe during irregular emptying operation and combining a computer and a signal acquisition system, a safety mutual feedback protection system is formed, so that the aims of ensuring the normal operation of the emptying system and providing hazard early warning information are fulfilled, and powerful reference is provided for the safety mutual feedback protection of various hydrogen emptying implementation scenes.
Description
Technical Field
The invention relates to the technical field of hydrogen natural emptying safety processing, in particular to a hydrogen natural emptying and static safety monitoring mutual feedback reaction protection system.
Background
The hydrogen energy is widely applied to various fields such as transportation, distributed power generation and the like by the characteristics of high energy conversion rate, environment-friendly use process, no carbon emission and the like, and plays a vital role in realizing the goals of carbon peak reaching and carbon neutralization. With the rapid development of the technical field of hydrogen application in China, the hydrogen storage and transportation quantity and the storage and transportation pressure are higher and higher, and the safety of a hydrogen natural emptying system serving as an important component of a safety facility of a hydrogen energy storage and transportation chain needs to be considered in a key way. When the natural hydrogen emptying operation is carried out, actions such as friction, collision, stripping and the like can often occur, so that electrostatic charges are continuously generated, accumulated and even discharged, accidental spontaneous combustion of hydrogen is easy to occur, flame invasion of an emptying device is caused, and potential danger is formed on a natural emptying system and an upstream hydrogen production and storage facility device.
At present, the hydrogen emptying operation generally has the characteristics of intermittence, instability, non-continuity and the like, so that the working state of an emptying facility in the emptying operation process cannot be accurately monitored by a hydrogen natural emptying system, and the problem of failure of the emptying system cannot be timely solved. In addition, the conventional emptying equipment is generally only provided with basic safety facilities, and does not link state parameters and static accumulation behaviors under various complicated emptying conditions, so that hydrogen spontaneous combustion and even explosion accidents caused by the static accumulation behaviors of an emptying system cannot be fundamentally and efficiently solved.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a mutual feedback reaction protection system for hydrogen natural venting and electrostatic safety monitoring, which can adjust the protection measures of the system according to the natural venting state of hydrogen and monitor the electrostatic accumulation behavior on line, so as to solve the safety problems of static electricity and accidental explosion during venting operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a mutual feedback reaction protection system for natural hydrogen evacuation and electrostatic safety monitoring comprises a hydrogen storage and transportation device, a nitrogen containing grid, a hydrogen evacuation pipe main body, an electrostatic measurement system, an infrared camera, a computer and a signal acquisition system;
the hydrogen storage and transportation device and the nitrogen container grid are respectively connected with the air inlet pipe of the emptying system through the hydrogen flow path pipeline and the nitrogen flow path pipeline, and the air inlet pipe of the emptying system is provided with a buffer tank and a flame arrester; the tail end of the air inlet pipe of the emptying system is connected with the bottom of the emptying pipe main body;
the emptying pipe main body comprises a molecular sealer, an emptying pipe discharge port and a first detection unit, wherein the first detection unit is used for monitoring the emptying state in the emptying operation process, the emptying state is fed back to a computer and a data acquisition system through a data transmission lead, when intermittent and discontinuous emptying exists in hydrogen emptying operation, the computer and the signal acquisition system immediately send an instruction to control a flow regulating valve and an electromagnetic valve on a nitrogen flow path pipeline, the molecular sealer is injected into the molecular sealer through a nitrogen flow path branch, and nitrogen molecules are used as sealing filler for sealing and preventing air from entering the emptying system;
the static measurement system comprises an in-pipe static sensor, a static transmission lead, a static signal conditioning plate and an outside-pipe static sensor, wherein the three in-pipe static sensors are all arranged in a hydrogen discharge pipe main body and are respectively arranged at the joint of an air inlet pipe of the emptying system and the hydrogen discharge pipe main body, the lower end of a molecular sealer and the joint of the upper end of the molecular sealer and an air outlet of the emptying pipe from bottom to top, the outside-pipe static sensor is arranged above the outlet of the air outlet of the emptying pipe and is used for monitoring the static accumulation behavior at the outlet of the air outlet of the emptying pipe, and the in-pipe static sensor and the outside-pipe static sensor are respectively connected with the static signal conditioning plate through the static transmission lead so as to facilitate static measurement and subsequent safe processing; the static signal conditioning board is connected with a computer and a signal acquisition system through a data transmission lead, and is used for acquiring, storing and processing static induction signals in real time, and analyzing static accumulation behaviors of the emptying pipe during irregular emptying operation by combining with a hydrogen emptying state;
the infrared camera is arranged on one side of the exhaust port of the emptying pipe, is connected with the computer signal collecting system and is used for monitoring abnormal ignition conditions outside the emptying system.
A further improvement of the invention is that the hydrogen flow path conduit is provided with a pressure reducing valve and a regulating valve.
The invention is further improved in that the tail end of the buffer tank is provided with an overpressure release pipe and a rupture disk is arranged, so that system damage caused by pressure unbalance is prevented.
A further improvement of the invention is that the flame arrestor is used to prevent a potential hazard to the natural emptying system and upstream hydrogen storage and transportation facility equipment due to flame intrusion.
The invention is further improved in that the nitrogen container grid consists of a plurality of commercial nitrogen steel cylinders, the pressure of the high-pressure nitrogen cylinder is 12.5MPa, and the nitrogen container grid is assembled vertically or horizontally and used for providing inert protective gas.
The invention is further improved in that the electrostatic sensor in the pipe is an annular non-contact electrostatic sensor which is embedded in the inner side of the main body of the emptying pipe and ensures that the inner wall of the pipeline is smooth.
The invention has the further improvement that the lower end of the electrostatic signal conditioning plate is connected with the support frame rod and the electrostatic grounding device, so that the converted, filtered and amplified electrostatic induction charges can be safely released through the electrostatic grounding device in time.
The invention has the further improvement that the upper ends of the support frame rod and the electrostatic grounding device are provided with a second detection unit which is used for monitoring the safety of the emptying environment after hydrogen is emptied, the emptying state is fed back to the computer and the data acquisition system through a data transmission lead, when the hydrogen is emptied to the external environment of the system and the abnormal accumulation phenomenon of the hydrogen occurs, the computer and the signal acquisition system immediately send an instruction to control the nitrogen purging system to protect the emptying system and the upstream equipment device, and the emptying operation is suspended according to the actual situation, so that the further expansion of the dangerous state is avoided.
The invention has the further improvement that the computer and the signal acquisition system are responsible for acquiring data monitoring information of related detection elements of the first detection unit and the second detection unit and further controlling the nitrogen purging system to protect the emptying system and the upstream equipment device; the static accumulation behavior of the static measurement system was collected under different emptying conditions.
The invention has at least the following beneficial technical effects:
the invention utilizes the detection unit and the shooting device to monitor the state parameters of the emptying pipe in real time, and the static induction charges of the emptying pipe are collected and measured by the static measurement system. The key information is fed back to the computer and the signal acquisition system in time, and the nitrogen purging protective gas is effectively controlled to be injected into the emptying system, so that the problem that the emptying system is invalid due to concentration abnormity, accidental ignition, intermittent emptying and air backflow is effectively solved.
The static detection device can conduct the trapped static charges to the static signal conditioning plate in time, feed back the static charges to the computer and the signal acquisition system in an electronic signal mode, and safely release the static charges through the support frame rod and the static grounding device.
The computer signal acquisition system can store and process the emptying state parameters and the static induction signals, analyzes the emptying state parameters and the static accumulation behavior of the emptying pipe during irregular operation by combining the hydrogen emptying states under different conditions, and provides powerful reference for the safe mutual feedback protection of various combustible gas emptying implementation scenes.
Drawings
FIG. 1 is a schematic diagram of a hydrogen gas evacuation and electrostatic safety monitoring mutual feedback reaction protection system disclosed in the present invention.
Description of reference numerals:
1-hydrogen storage and transportation means; 11-a hydrogen flow path conduit; 12-a pressure relief valve; 13-a regulating valve;
2-nitrogen packaging grid; 21-nitrogen flow line piping; 22-a check valve; 23-a flow regulating valve; 24-a solenoid valve; 25-nitrogen gas flow path branch I; 26-nitrogen gas flow path branch II;
3-air inlet pipe of emptying system; 31-a flame arrester;
4-a buffer tank; 41-an overpressure relief pipe; 42-rupture disk;
5-hydrogen blow-down pipe main body; 51-a flare base; 52-molecular sealer; 53-vent pipe vent; 54-detection unit one; 55-detection unit two;
6-a static measurement system; 61-an in-tube electrostatic sensor; 62-electrostatic transfer wire; 63-electrostatic signal conditioning board; 64-an off-tube electrostatic sensor; 65-support frame rod and electrostatic grounding device;
7-an infrared camera;
8-computer and signal acquisition system; 81-a first alarm unit; 82-alarm unit two.
Detailed Description
The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the hydrogen natural emptying and static safety monitoring mutual feedback reaction protection system provided by the invention comprises a hydrogen storage and transportation device 1, a nitrogen containing grid 2, an emptying system air inlet pipe 3, an overpressure discharge pipe 41, a hydrogen emptying pipe main body 5, a detection unit I54, a detection unit II 55, a static measurement system 6, an infrared camera 7, a computer and data acquisition system 8 and an alarm unit, wherein the hydrogen storage and transportation device 1 and the nitrogen containing grid 2 are respectively connected with the emptying system air inlet pipe 3 through a hydrogen flow path pipeline 11 and a nitrogen flow path pipeline 21, and nitrogen purging operation is required before hydrogen emptying is implemented. And a buffer tank 4 and a flame arrester 31 are arranged on the air inlet pipe 3 of the emptying system. The hydrogen flow passage pipe 11 is provided with a pressure reducing valve 12 and a regulating valve 13. The nitrogen flow pipeline 21 is provided with a pressure reducing valve 12, a check valve 22, a flow regulating valve 23 and an electromagnetic valve 24, then the nitrogen flow pipeline 21 is respectively provided with a first nitrogen flow branch 25 and a second nitrogen flow branch 26, the first nitrogen flow branch 25 is connected with the molecular sealer 52, and the second nitrogen flow branch 26 is connected with the emptying system air inlet pipe 3 and is provided with a regulating valve.
The end of the buffer tank 4 is provided with an overpressure relief pipe 41 and a rupture disc 42 is arranged to prevent system damage caused by pressure unbalance.
The flame arrestor 31 is intended to prevent the potential hazard to natural-ventilation systems and upstream hydrogen storage and transportation facilities due to flame intrusion.
The emptying operation of the hydrogen storage and transportation device 1 may be implemented in a number of scenarios, for example: the method comprises the following scenes of maintenance of a hydrogen storage tank of a hydrogenation station, emptying of a hydrogen production place, maintenance of a hydrogen transportation pipeline, pre-cooling of a hydrogen storage and transportation device, emptying and the like.
The nitrogen packaging grid 2 consists of a plurality of commercial nitrogen steel cylinders, the pressure of the high-pressure nitrogen cylinder is 12.5MPa, and the nitrogen packaging grid is vertically or horizontally assembled to provide inert protective gas.
The tail end of the air inlet pipe 3 of the emptying system is connected with the bottom of an emptying pipe main body 5, the emptying pipe main body 5 comprises a molecule sealer 52, an emptying pipe discharge port 53 and a first detection unit 54, the first detection unit 54 is composed of components such as a temperature sensor, a pressure sensor and a flow sensor, is used for monitoring the emptying state in the emptying operation process, feeding the emptying state back to the computer and data acquisition system 8 through a data transmission lead, when the hydrogen emptying operation is intermittent and discontinuous, the first alarm unit 81 flashes and gives an alarm sound, the computer and the signal acquisition system 8 immediately give an instruction to control the flow regulating valve 23 and the electromagnetic valve 24 on the nitrogen flow path pipeline 21, the molecular sealer 52 is injected through the nitrogen flow path branch 25, the molecular sealer 52 uses nitrogen molecules as a sealing filler to seal and prevent air from entering the venting system.
The static measurement system 6 comprises an in-pipe static sensor 61, a static transmission lead 62, a static signal conditioning plate 63, an outside-pipe static sensor 64, a support frame rod and a static grounding device 65, wherein the three in-pipe static sensors 61 are all arranged in a hydrogen discharge pipe main body 5 and are respectively arranged at the joint of an air inlet pipe 3 of the emptying system and the hydrogen discharge pipe main body 5, the lower end of a molecular sealer 52 and the joint of the upper end of the molecular sealer 52 and an air discharge pipe vent 53 from bottom to top, the in-pipe static sensor 61 is an annular non-contact static sensor and is embedded in the inner side of the air discharge pipe main body 5 and ensures that the inner wall of a pipeline is smooth, the outside-pipe static sensor 64 is arranged above the outlet of the air discharge pipe vent 53 and is used for monitoring the static accumulation behavior at the outlet of the air discharge pipe vent 53, and the in-pipe static sensor 61 and the outside-pipe static sensor 64 are respectively connected with the static signal conditioning plate 63 through the static transmission lead 62, so as to facilitate the electrostatic measurement and subsequent safe processing.
The static transmission conducting wire 62 is a copper conducting wire, and two ends of the copper conducting wire are connected with the static sensor and the static signal conditioning board 63, so that the induction charge received by the static signal conditioning board 63 is consistent with the induction charge data measured by the static sensor.
The static signal conditioning board 63 is a disc-shaped panel, can filter and amplify static signals, is connected with the computer and the signal acquisition system 8 through a data transmission wire, collects, stores and processes static induction signals in real time, can combine a hydrogen emptying state, and analyzes static accumulation behaviors during irregular emptying operation of an emptying pipe.
The support frame rod and the electrostatic grounding device 65 mainly have the function of supporting and fixing the electrostatic signal conditioning plate 63, and are provided with an electrostatic grounding protection device.
The lower end of the electrostatic signal conditioning plate 63 is connected with the support frame rod and the electrostatic grounding device 65, so that the converted, filtered and amplified electrostatic induction charges can be safely released through the electrostatic grounding device in time.
The upper ends of the support frame rods and the electrostatic grounding device 65 are provided with a second detection unit 55, the second detection unit is composed of components such as a hydrogen concentration sensor, a temperature sensor and a flame detector and is used for monitoring the safety of the emptying environment after hydrogen is emptied, the emptying state is fed back to the computer and the data acquisition system 8 through a data transmission lead, when the hydrogen is emptied to the external environment of the system and abnormal accumulation of the hydrogen occurs, the second alarm unit 82 flickers and gives an alarm, the computer and the signal acquisition system 8 immediately send an instruction to control the nitrogen purging system 2 to protect the emptying system and the upstream equipment device, emptying operation is suspended according to actual conditions, and the danger state is prevented from being further expanded.
And the infrared camera 7 is arranged on one side of the vent pipe air outlet 53, is connected with the computer signal collection system 8 and is used for monitoring abnormal ignition conditions outside the venting system.
The computer and signal acquisition system 8 is responsible for acquiring data monitoring information of relevant detection elements of the first detection unit 54 and the second detection unit 55, feeding the data monitoring information back to the corresponding first alarm unit 81 and the second alarm unit 82, and further controlling the nitrogen purging system 2 to protect the emptying system and the upstream equipment device; the static charge accumulation behavior of the static measurement system 6 was collected under different emptying conditions.
The invention provides a hydrogen natural emptying and static safety monitoring mutual feedback reaction protection system, which comprises the following working processes:
the safety protection system for emptying operation related by the invention is suitable for a plurality of implementation scenes, such as: the method comprises the following scenes of maintenance and emptying of a hydrogen storage tank of a hydrogenation station, operation emptying of a chemical hydrogen production place, maintenance and emptying of a hydrogen transportation pipeline, precooling and emptying of large-scale hydrogen storage and transportation equipment and the like.
According to the monitoring and protection purposes, the working states of all key links of the system need to be overhauled and tested regularly, and the phenomena of overpressure, air leakage and the like of the emptying pipeline are avoided.
Before the operation of unloading, send out the order by computer and signal acquisition system 8, control nitrogen gas flow path from nitrogen gas collection check 2 through nitrogen gas flow path branch road two 26 entering unloading system intake pipe 3, come out with the replacement of impurity gas such as air in the whole system pipeline.
During the operation of unloading, hydrogen medium has set up spark arrester 31 and buffer tank 4 by hydrogen storage and transportation device 1 through hydrogen flow pipeline 11 entering unloading system intake pipe 3 in the unloading system intake pipe 3, can effectively prevent outside flame to scurry into the hydrogen discharge pipe and prevent the system damage because of pressure unbalance causes.
The invention provides a hydrogen natural emptying and static safety monitoring mutual feedback reaction protection system, which mainly comprises the following safety monitoring mutual feedback reaction protection working conditions:
case 1: when a hydrogen medium enters the hydrogen vent pipe main body 5 from the air inlet pipe 3 of the venting system and is normally vented, the venting state in the venting operation process is monitored by the detection unit I54, data such as pipeline flow, pressure, temperature and the like are collected and fed back to the computer and the data acquisition system 8 through a data transmission lead, an instruction is sent out, the flow regulating valve 23 and the electromagnetic valve 24 on the nitrogen flow pipeline 21 are controlled, the hydrogen medium is injected into the molecular sealer 52 through the nitrogen flow pipeline branch I25 by using small-flow nitrogen purge gas, the gas in the pipeline is kept to form micro positive pressure, and gas backflow is prevented.
Case 2: when intermittent and discontinuous emptying exists in the hydrogen emptying operation, the first detection unit 54 reacts rapidly, data such as flow, pressure, temperature and the like of the emptying pipe are fed back to the computer and the data acquisition system 8 through a data transmission lead, the first alarm unit 81 flashes and gives an alarm sound, the computer and the signal acquisition system 8 immediately give an instruction to control the flow regulating valve 23 and the electromagnetic valve 24 on the nitrogen flow path pipeline 21, and the molecular sealer 52 is injected with large-flow nitrogen purging gas through the first nitrogen flow path branch 25 to fully protect and prevent external impurity gas from invading the emptying pipe.
Case 3: no matter the hydrogen is normally or intermittently discharged, the phenomenon of hydrogen concentration and environment temperature abnormity can occur when the hydrogen is discharged to the external environment of the system, and dangerous conditions such as electrostatic accidental ignition are easy to occur, at the moment, the second detection unit 55 reacts rapidly, monitoring state parameters are fed back to the computer and the data acquisition system 8 through a data transmission lead, the second alarm unit 82 flickers and gives out alarm sound, the computer and the signal acquisition system 8 immediately give out an instruction, the flow regulating valve 23 and the electromagnetic valve 24 on the nitrogen flow path pipeline 21 are completely opened, large-flow nitrogen is sprayed into the discharge pipe, flame hazard is eliminated, and the discharge system can normally perform discharge operation under various conditions.
Case 4: in the whole operation process of natural hydrogen emptying, electrostatic charges are accumulated abnormally or even discharged due to actions such as friction, collision and the like, accidental spontaneous combustion of hydrogen is easy to occur, flame invasion of an emptying device is caused, and potential danger is formed on a natural emptying system and an upstream hydrogen production and storage facility device.
The static sensor 61 in the pipe and the static sensor 64 outside the pipe are used for monitoring the static accumulation behavior in the natural hydrogen emptying process, when the static sensor catches the static charge, the static charge can be rapidly transferred to the static signal conditioning plate 63 through the static transmission lead 62, so that the abnormal accumulation of the static charge at the static sensor is avoided. Then, the electrostatic signal conditioning board filters and amplifies the received electrostatic signal, the electronic signal is fed back to the computer and the signal acquisition system 8 through the data transmission lead, and the electrostatic charge is safely released through the support frame rod and the electrostatic grounding device 65. If the static charge is not released in time, an accidental ignition accident occurs, and the situation can be properly handled according to the situation 3.
After the operation of unloading, send out the order by computer and signal acquisition system 8, control nitrogen gas flow path and follow nitrogen gas collection check 2 and get into molecule sealer 52 unloading system intake pipe 3 respectively through nitrogen gas flow path branch road one 25 and nitrogen gas flow path branch road two 26, it is clean to sweep the entire system pipeline, save unloading state parameter and static induction signal, handle, combine the hydrogen unloading state under the different conditions, unloading state parameter (including flow, pressure, temperature isoparametric) and static accumulation action when the irregular operation of analysis unloading pipe, safety for all kinds of hydrogen unloading implementation scenes is presented each other and is protected and provide the powerful reference. It should be understood that the detailed description and specific examples, while indicating the embodiments of the invention, are given by way of illustration only, not limitation, and various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
Claims (9)
1. A hydrogen natural emptying and static safety monitoring mutual feedback reaction protection system is characterized by comprising a hydrogen storage and transportation device, a nitrogen containing grid, a hydrogen emptying pipe main body, a static measurement system, an infrared camera, a computer and a signal acquisition system;
the hydrogen storage and transportation device and the nitrogen container grid are respectively connected with the air inlet pipe of the emptying system through the hydrogen flow path pipeline and the nitrogen flow path pipeline, and the air inlet pipe of the emptying system is provided with a buffer tank and a flame arrester; the tail end of the air inlet pipe of the emptying system is connected with the bottom of the emptying pipe main body;
the emptying pipe main body comprises a molecular sealer, an emptying pipe discharge port and a detection unit I, wherein the detection unit I is used for monitoring the emptying state in the emptying operation process, feeding the emptying state back to a computer and a data acquisition system through a data transmission lead, and immediately sending an instruction by the computer and a signal acquisition system when intermittent and discontinuous emptying exists in the hydrogen emptying operation, controlling a flow regulating valve and an electromagnetic valve on a nitrogen flow path pipeline and injecting the instruction into the molecular sealer through a nitrogen flow path branch, wherein the molecular sealer uses nitrogen molecules as sealing filler to play roles of sealing and preventing air from entering the emptying system;
the static measurement system comprises an in-pipe static sensor, a static transmission lead, a static signal conditioning plate and an out-of-pipe static sensor, wherein the three in-pipe static sensors are all arranged in a hydrogen discharge pipe main body and are respectively arranged at the joint of an air inlet pipe of the emptying system and the hydrogen discharge pipe main body, the lower end of a molecular sealer and the joint of the upper end of the molecular sealer and an air outlet of the emptying pipe from bottom to top, the out-of-pipe static sensor is arranged above the outlet of the air outlet of the emptying pipe and is used for monitoring the static accumulation behavior at the outlet of the air outlet of the emptying pipe, and the in-pipe static sensor and the out-of-pipe static sensor are respectively connected with the static signal conditioning plate through the static transmission lead so as to facilitate static measurement and subsequent safe processing; the static signal conditioning board is connected with a computer and a signal acquisition system through a data transmission lead, and is used for acquiring, storing and processing static induction signals in real time, and analyzing static accumulation behaviors of the emptying pipe during irregular emptying operation by combining with a hydrogen emptying state;
the infrared camera is arranged on one side of the exhaust port of the emptying pipe, is connected with the computer signal collecting system and is used for monitoring abnormal ignition conditions outside the emptying system.
2. The system according to claim 1, wherein the hydrogen flow pipeline is provided with a pressure reducing valve and a regulating valve.
3. The system for protecting hydrogen natural gas release and electrostatic safety monitoring mutual feedback reaction as claimed in claim 1, wherein the end of the buffer tank is provided with an overpressure release pipe and a rupture disk is arranged to prevent system damage caused by pressure imbalance.
4. The system of claim 1, wherein the flame arrestor is configured to prevent a potential hazard to the natural gas venting system and upstream hydrogen storage and transportation facilities due to flame intrusion.
5. The system according to claim 1, wherein the nitrogen containing grid is composed of a plurality of commercial nitrogen cylinders, the pressure of the high-pressure nitrogen cylinder is 12.5MPa, and the high-pressure nitrogen cylinder is vertically or horizontally assembled for providing inert shielding gas.
6. The system according to claim 1, wherein the electrostatic sensor in the tube is a ring-shaped non-contact electrostatic sensor embedded in the inner side of the main body of the vent tube and ensuring the inner wall of the tube to be smooth.
7. The system according to claim 1, wherein the electrostatic signal conditioning board is connected to the support frame and the electrostatic grounding device at a lower end thereof, so as to safely discharge the converted, filtered and amplified electrostatic charges through the electrostatic grounding device.
8. The system according to claim 1, wherein a second detection unit is disposed at the upper end of the support rod and the electrostatic grounding device for monitoring the safety of the environment after the hydrogen is discharged, and the discharged state is fed back to the computer and the data acquisition system through the data transmission wire, when the hydrogen is discharged to the environment outside the system and the abnormal accumulation of hydrogen occurs, the computer and the signal acquisition system immediately send out an instruction to control the nitrogen purging system to protect the discharging system and the upstream equipment device, and the discharging operation is suspended according to the actual situation, so as to avoid further expansion of the dangerous state.
9. The system according to claim 1, wherein the computer and signal acquisition system is responsible for acquiring data monitoring information of the detection elements related to the detection unit I and the detection unit II and further controlling the nitrogen purging system to protect the venting system and upstream equipment devices; the static accumulation behavior of the static measurement system was collected under different emptying conditions.
Priority Applications (1)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014226873A1 (en) * | 2014-06-27 | 2015-12-31 | Hyundai Motor Company | Apparatus and method for displaying the status of a hydrogen tank based on vehicle fire |
| KR20170130980A (en) * | 2016-05-20 | 2017-11-29 | 한국에너지기술연구원 | A leak test apparatus and a leak test mothod for a fuel cell stack |
| CN107490598A (en) * | 2017-08-21 | 2017-12-19 | 南京工业大学 | High-pressure hydrogen pipeline shock wave and static coupling measurement system and method |
| CN114151729A (en) * | 2021-11-16 | 2022-03-08 | 北京航天试验技术研究所 | Safe diffusion system and method for liquid hydrogen storage hydrogen filling station |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014226873A1 (en) * | 2014-06-27 | 2015-12-31 | Hyundai Motor Company | Apparatus and method for displaying the status of a hydrogen tank based on vehicle fire |
| KR20170130980A (en) * | 2016-05-20 | 2017-11-29 | 한국에너지기술연구원 | A leak test apparatus and a leak test mothod for a fuel cell stack |
| CN107490598A (en) * | 2017-08-21 | 2017-12-19 | 南京工业大学 | High-pressure hydrogen pipeline shock wave and static coupling measurement system and method |
| CN114151729A (en) * | 2021-11-16 | 2022-03-08 | 北京航天试验技术研究所 | Safe diffusion system and method for liquid hydrogen storage hydrogen filling station |
Non-Patent Citations (1)
| Title |
|---|
| 孟亦飞, 张礼敬, 陶刚: "含氧氢气钢瓶释放过程危险性分析及处置", 中国安全科学学报, no. 09, 30 September 2005 (2005-09-30), pages 57 - 60 * |
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