CN104238601A - Air cooling type hydrogen fuel stand-by power monitoring system - Google Patents
Air cooling type hydrogen fuel stand-by power monitoring system Download PDFInfo
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- CN104238601A CN104238601A CN201410211491.4A CN201410211491A CN104238601A CN 104238601 A CN104238601 A CN 104238601A CN 201410211491 A CN201410211491 A CN 201410211491A CN 104238601 A CN104238601 A CN 104238601A
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Abstract
The invention discloses an air cooling type hydrogen fuel stand-by power monitoring system which is characterized by comprising a detection element, a controller, a network switch and an actuator. The detection element comprises a pressure transmitter, a hydrogen concentration sensor, an oxygen concentration sensor, a temperature sensor, a humidity sensor, a direct-current transformer, a smoke sensor, a water level sensor, a vibrating sensor, a door magnet and a hydrogen fuel cell detecting module, wherein the pressure transmitter, the hydrogen concentration sensor, the oxygen concentration sensor, the temperature sensor, the humidity sensor, the direct-current transformer, the smoke sensor, the water level sensor, the vibrating sensor, the door magnet and the hydrogen fuel cell detecting module are connected with the controller so that detected parameters of a hydrogen fuel standby power source and a cabinet can be transmitted to the controller. The controller can transmit data to an upper computer through the network switch or a serial port. The controller processes the data. When an alarm needs to be given, alarm information is sent out, or the actuator is controlled to execute the corresponding movement when it is judged that the parameters are changed.
Description
Technical field
The present invention relates to hydrogen fuel standby power supply field, in particular to a kind of air-cooled hydrogen fuel standby power supply supervisory system.
Background technology
Air-cooled hydrogen fuel standby power system adopts Proton Exchange Membrane Fuel Cells technology, use the oxygen in hydrogen and air, by the standby power system of which generate electricity by electrochemical reaction, common carrier base station, electricity substation communications equipment room, bank data machine room etc. have the safe and reliable standby electricity guarantee of requirement industry to electric power can be widely used in.Hydrogen fuel alternate power technologies is due to outstanding features such as its load capacity is strong, the high and low noise of power density, non-pollution discharge, long-time power supplies, the shortcoming of current traditional oil machine and lead-acid accumulator can be overcome, especially be applicable to being applied to the application scenarios that the density of population is high, environmental requirement is high, standby electricity will be aspired for stability, therefore hydrogen fuel power supply is as novel alternate power technologies, is subject to increasing attention in communications industry guarantee for electrical domain, special standby electric application.And these applied environments such as base station, machine room are generally unattended, therefore, require that backup power supply system has perfect self-detection control ability, comprise detection and the control of all corollary apparatus, environmental parameter and the Environmental security that system cloud gray model relates to.
The main composition of complete set air-cooled hydrogen fuel standby power system is: hydrogen fuel cell module, hydrogen storage cylinder, and wherein hydrogen fuel cell module is installed on hydrogen fuel standby power supply cabinet, and hydrogen storage cylinder is installed on hydrogen storage cylinder cabinet.Usual hydrogen fuel standby power supply control system only achieves its core component---the detection and control of hydrogen fuel cell module, and do not comprise detection and the control of corollary apparatus (as hydrogen storage cylinder, installing rack), environmental parameter (as ambient temperature and humidity) and the Environmental security (as hydrogen gas leakage) to system cloud gray model, and general hydrogen fuel standby power supply control system does not possess system for electric duration calculation.
Therefore, how to provide a kind of supervisory system, the operation conditions of comprehensive monitoring hydrogen fuel standby power system, just becomes those skilled in the art's problem demanding prompt solution.
Summary of the invention
The invention provides a kind of air-cooled hydrogen fuel standby power supply supervisory system, in order to the operation conditions of comprehensive monitoring hydrogen fuel standby power system, data uploaded in real time, and when system malfunctions can and alarm.
For achieving the above object, the invention provides a kind of air-cooled hydrogen fuel standby power supply supervisory system, comprising detecting element, controller, the network switch and executive component, wherein:
Described detecting element comprises pressure unit, hydrogen gas concentration sensor, oxygen concentration sensor, temperature sensor, humidity sensor, DC current transformer, smoke transducer, level sensor, vibration transducer, Men Ci, hydrogen fuel cell detection module and DC-DC convertor module; Described pressure unit is for detecting the air pressure of hydrogen cylinder hydrogen supply pipeline; Described hydrogen gas concentration sensor is for detecting the density of hydrogen of hydrogen storage cylinder cabinet inside; Described oxygen concentration sensor is for detecting the oxygen concentration of hydrogen fuel standby power supply cabinet; Described temperature sensor detects the temperature of hydrogen storage cylinder cabinet, hydrogen fuel standby power supply cabinet and controller case; Described humidity sensor detects the humidity of hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet; Described smoke transducer is for detecting the smokescope of hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet, and when the smokescope of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet exceedes preset value, the dry contact of the described smoke transducer of relative set closes; Described level sensor is for detecting the water level of hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet, and when the water level of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet did not have the probe of described level sensor, the dry contact of the described level sensor of relative set closed; Described vibration transducer detects the vibration acceleration of the cabinet of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet, when the vibration acceleration of the cabinet of hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet exceedes preset value, the dry contact of the described vibration transducer of relative set closes; The cabinet door opening and closing state of described door Magnetic testi hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet, when cabinet door is opened, the dry contact of described door magnetic closes; Described DC current transformer is for detecting the electric current of hydrogen fuel standby power supply load circuit; Described hydrogen fuel cell detection module is for detecting the temperature of hydrogen fuel cell, output current, output power, output voltage, super-capacitor voltage and DC-DC conversion efficiency, described hydrogen fuel cell detection module has serial communication interface or network interface, in order to connect the described network switch, described hydrogen fuel cell detection module also has dry contact output simultaneously;
Described controller comprises central processing module, display module, operational module, power supply confluence module and communication module, described display module, described operational module are all connected with described central processing module with described communication module, wherein: described display module is display screen and status indicator lamp, described operational module comprises surface key, buried button and scram button, described surface key is for accepting the button operation of user and described surface key action being passed to described central processing module, described buried button is absorbed in the shell of described operational module with anti-misoperation, the normally opened contact of described scram button is connected with described central processing module, and when the normally opened contact of described scram button closes, described central processing module starts emergent stopping program thus the operation of controller described in urgent interrupt, described power supply confluence module is used for the output voltage of multichannel hydrogen fuel standby power supply being confluxed into a road voltage and exports, described communication module comprises analog acquisition unit, dry contact communication unit, RS485 communication unit, RS232 communication unit, CAN-BUS communication unit and TCP-IP communication unit, described analog acquisition unit and described pressure unit, described hydrogen gas concentration sensor, described oxygen concentration sensor, described current transformer, described temperature sensor, described humidity sensor and described DC-DC convertor module connect, for the air pressure by hydrogen cylinder hydrogen supply pipeline, and the density of hydrogen of hydrogen storage cylinder cabinet inside, the oxygen concentration of hydrogen fuel standby power supply cabinet, the electric current of hydrogen fuel standby power supply load circuit, hydrogen storage cylinder cabinet, the temperature of hydrogen fuel standby power supply cabinet and controller case, the humidity of hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet, and the DC-DC converter efficiency of hydrogen fuel standby power supply, be passed to described CPU (central processing unit), described dry contact communication unit and described smoke transducer, described level sensor, described vibration transducer, described door magnetic, the dry contact of described hydrogen fuel cell detection module and described scram button connect, its dry contact open and-shut mode is detected for described central processing module, described TCP-IP communication unit is connected with the described network switch, the temperature of the hydrogen fuel cell that the described hydrogen fuel cell detection module for being connected on the described network switch detects, output current, output power, output voltage and super-capacitor voltage are passed to described central processing module, and described RS485 communication unit or described RS232 communication unit are connected with described central processing module, provide the industrial communication interface that described central processing module communicates with described host computer,
Described central processing module obtains the air pressure of hydrogen cylinder hydrogen supply pipeline and compared with preset pressure, when this atmospheric pressure value is lower than preset pressure value, the hydrogen in this hydrogen cylinder of described central processing module judges is finished; Described central processing module obtain hydrogen cylinder cabinet inside density of hydrogen and compared with the density of hydrogen preset, when this density of hydrogen value is higher than the density of hydrogen value preset, this hydrogen cylinder cabinet generation hydrogen gas leakage of described central processing module judges; Described central processing module obtain hydrogen fuel standby power supply cabinet oxygen concentration and compared with the oxygen concentration preset, when this oxygen density value is lower than default oxygen density value, the air mass flow of this hydrogen fuel standby power supply cabinet of described central processing module judges is too low; Described central processing module obtain hydrogen storage cylinder cabinet, hydrogen fuel standby power supply cabinet and controller case temperature and with and respectively compared with the temperature high level preset and temperature low value, when this temperature value is higher than the temperature high level preset, the temperature of this hydrogen storage cylinder cabinet of described central processing module judges, hydrogen fuel standby power supply cabinet or controller case is too high, when this temperature value is lower than the temperature low value preset, the temperature of this hydrogen storage cylinder cabinet of described central processing module judges, hydrogen fuel standby power supply cabinet or controller case is too low; Described central processing module obtains the humidity of hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet also respectively compared with the humidity value preset, when this humidity value is greater than default humidity value, the humidity of this hydrogen storage cylinder cabinet of described central processing module judges or hydrogen fuel standby power supply cabinet is excessive;
Described executive component comprises fan, audible-visual annunciator, relay and remote communication module, described fan is connected with described dry contact communication unit, for: when the density of hydrogen of described central processing module judges hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet or smokescope are run higher than driving described fan during preset value with the diffusion accelerating hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet hydrogen or smog, or/and, when the temperature of described central processing module judges hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet or described controller case runs to accelerate hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet or described controller case cooling higher than driving described fan during preset value, described audible-visual annunciator is used for described pressure unit being detected when described central processing module, described hydrogen gas concentration sensor, described oxygen concentration sensor, described smoke transducer, described level sensor, described shock sensor, described door magnetic or described hydrogen fuel cell detection module wherein at least one the change of dry contact open and-shut mode or judge the temperature of hydrogen fuel cell, output current, output power or output voltage drive described audible-visual annunciator to carry out sound and light alarm when meeting pre-conditioned, described remote communication module is connected with described central processing module, for transmitting monitoring information by network to system host computer under the driving of described central processing module, or send warning message to the phone number preset under the driving of described central processing module, described relay is connected with described dry contact communication unit, stops the operation of hydrogen fuel standby power system for the start up system emergent stopping working procedure when described central processing module judges hydrogen fuel standby power supply fault.
Wherein, the density of hydrogen value preset has three, is 25%LEL, 50%LEL and 75%LEL, respectively corresponding Level 1Alarming, secondary alarm and three grades of alarms, and wherein LEL is the concentration of lower explosive limit value of hydrogen.
Wherein, when hydrogen fuel standby power supply is in off position, described controller calculates the static hydrogen reserves of hydrogen cylinder, and its computing method are:
M=0.8 × X × V × (P-P
preset)
Wherein: M is the hydrogen reserves of hydrogen cylinder, X is the hydrogen cylinder number of series connection, and V is the volume of this hydrogen cylinder, and P is the current Hydrogen Vapor Pressure of this hydrogen cylinder, P
presetfor the Hydrogen Vapor Pressure preset.
Wherein, when hydrogen fuel standby power supply is in running order, described controller calculates hydrogen fuel standby power supply realtime power duration for subsequent use, and its computing method are:
The amount of substance of the hydrogen of hydrogen cylinder is n=Σ n
i=Σ [(P
i-P
lower limit) Vi × 10
3/ RT];
Described controller detects that when hydrogen fuel standby power supply is in off position the amount of substance of the hydrogen of leakage is n
let out;
The quality of the hydrogen of hydrogen cylinder is m
storage=(n-n
let out) m
rub;
The hydrogen-consuming volume often producing a kilowatt hour electricity is m
consumption=A ρ
hydrogen;
The real-time output power of hydrogen fuel standby power supply is P
time;
Then: P
timet
standby=m
storage/ m
consumption;
Hydrogen fuel standby power supply realtime power duration for subsequent use is t
standby=m
storage/ m
consumptionp
time;
Wherein: i is positive integer, be summed to and i is sued for peace; n
iit is the amount of substance of the hydrogen of i-th hydrogen cylinder; P
iit is the Hydrogen Vapor Pressure of i-th hydrogen cylinder; V
iit is the volume of i-th hydrogen cylinder; P
lower limitthe lower limit of default hydrogen-pressure force value, when Hydrogen Vapor Pressure is lower than this value, hydrogen fuel standby power system cisco unity malfunction; R is ideal gas constant, R=8.314J/mol/k; T is absolute temperature, T (k)=273.15+t (DEG C), and setting t=25 DEG C, then get T=298.15 DEG C; m
rubfor the molal weight of hydrogen, m
rub=2 grams/mol; A is consumption hydrogen constant, represents the volume under normal conditions often producing the consumption hydrogen of a kilowatt hour electricity, A=0.87m
3/ kwh; ρ
hydrogenfor the hydrogen density under normal conditions.
Wherein, P
lower limitfor 0.5MPa.
Wherein, described controller detects the amount of substance n of the hydrogen of leakage when hydrogen fuel standby power supply is in off position
let out, its computing method are as follows:
Calculate the mean value that the Hydrogen Vapor Pressure of N number of hydrogen cylinder when hydrogen fuel standby power supply is in off position reduces
The amount of substance n of the hydrogen leaked
let out=Δ P
allΣ V
i× 10
3/ RT;
Wherein, i is positive integer, is summed to and sues for peace to i; P
iit is the Hydrogen Vapor Pressure of i-th hydrogen cylinder; V
iit is the volume of i-th hydrogen cylinder; R is ideal gas constant, R=8.314J/mol/k; T is absolute temperature, T (k)=273.15+t (DEG C), and setting t=25 DEG C, then get T=298.15 DEG C.
Wherein, described controller has password Authority Verification, for carrying out identity restriction to the parameter setting operation authority of described controller.
Wherein, the acoustic alarm of described audible-visual annunciator and light are reported to the police is separate.
Compared with prior art, beneficial effect of the present invention is embodied in:
Air-cooled hydrogen fuel standby power supply supervisory system disclosed by the invention, can the temperature of real-time monitoring system running environment, humidity, oxygen concentration, smog, cabinet door state (ON/OFF), cabinet vibrational state, water position status in cabinet.And be provided with corresponding alarming mechanism, facilitate applied environment and the safety in operation of user's monitoring system; Can Real-Time Monitoring hydrogen reserves, and when the hydrogen in hydrogen cylinder group uses totally, report the empty alarm of hydrogen cylinder, notify that user changes hydrogen cylinder group; Can Real-Time Monitoring hydrogen gas leakage amount, and with hydrogen explosion least concentration value LEL for radix calculates, hydrogen gas leakage is divided into safely 3 grades of alarms, increase security of system monitoring, system cloud gray model safe reliability is promoted; The present invention can realize the realtime power duration calculation for subsequent use of air-cooled hydrogen fuel standby power system, makes user have clear and definite control for the available duration via of residue storage hydrogen, and according to the application demand of reality, arranges hydrogen supply work flexibly; For user provides dry contact, RS485, RS232, CAN-bus, TCP/IP interface, realizing execute-in-place for user, for realizing telecommunication flexibly, and there is the function of news in brief alarm, default warning information can be sent to default phone number; Adopt the password authority of optimum configurations and operation, both ensure that the adaptability of system, and also ensure that processing safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air-cooled hydrogen fuel standby power supply supervisory system of one embodiment of the invention;
Fig. 2 is the controller front and back panel schematic diagram of the air-cooled hydrogen fuel standby power supply supervisory system of one embodiment of the invention;
Fig. 3 is the system realtime power of the air-cooled hydrogen fuel standby power supply supervisory system of one embodiment of the invention and duration calculation process flow diagram for subsequent use.
Embodiment
Refer to Fig. 1, Fig. 1 is the structural representation of the air-cooled hydrogen fuel standby power supply supervisory system of one embodiment of the invention.
As shown in Figure 1, pressure unit, hydrogen gas concentration sensor, oxygen concentration sensor, temperature sensor, humidity sensor, the analog acquisition unit of DC current transformer connection control device, smoke transducer, level sensor, vibration transducer, Men Ci, the dry contact communication unit of hydrogen fuel cell detection module connection control device, hydrogen fuel cell detection module interconnection network switch, controller is interconnection network switch also, thus by network exchange data, the interface that hydrogen fuel cell detection module and controller are connected with the network switch is all TCP-IP interface, or be TCP-IP communication unit.In one embodiment of the invention, serial communication unit comprises RS485 communication unit, RS232 communication unit, CAN-BUS communication unit, and wherein RS485 communication unit and RS232 communication unit are for being connected host computer.Controller has display module and operational module, and as shown in Figure 2 a, described display module comprises display screen and status indicator lamp; Described operational module comprises surface key, buried button and scram button, described surface key is for accepting the button operation of user and described surface key action being passed to described central processing module, described buried button is absorbed in the shell of described operational module with anti-misoperation, the normally opened contact of described scram button is connected with described central processing module, and when the normally opened contact of described scram button closes, described central processing module starts emergent stopping program thus the operation of controller described in urgent interrupt.
In one embodiment of the invention, be provided with: pressure unit 3, be arranged on the reduction valve front end of 3 hydrogen cylinder group hydrogen supply pipelines respectively.For measuring the Hydrogen Vapor Pressure of hydrogen cylinder group;
Hydrogen gas concentration sensor 4,2 are contained in hydrogen storage cylinder cabinet, and 2 are contained in hydrogen fuel standby power supply cabinet;
Oxygen concentration sensor 2, is contained in hydrogen fuel standby power supply cabinet;
Temperature sensor 4,2 are contained in hydrogen storage cylinder cabinet, and 2 are contained in hydrogen fuel standby power supply cabinet;
Humidity sensor 4,2 are contained in hydrogen storage cylinder cabinet, and 2 are contained in hydrogen fuel standby power supply cabinet;
DC current transformer 1, for measuring system electric power outputting current;
Smoke transducer 4,2 are contained in hydrogen storage cylinder cabinet, and 2 are contained in in hydrogen fuel standby power supply cabinet;
Level sensor 4,2 are contained in bottom hydrogen storage cylinder cabinet, and 2 are contained in hydrogen fuel standby power supply cabinet inner bottom part, report to the police for water enchroachment (invasion);
Vibration transducer 4,2 are contained in the frame of hydrogen storage cylinder cabinet, and 2 are contained in the frame in hydrogen fuel standby power supply cabinet, for collision warning;
Door magnetic 3,2 are contained in before and after hydrogen storage cylinder cabinet on doorframe respectively, and 1 is contained on the doorframe at Qianmen in hydrogen fuel standby power supply cabinet.For the on off state of sensing door;
Display screen is LCD display, technical grade 800 × 600 color LCD screen; Status indicator lamp is LED, adopts red yellowish green trichromatism LED, can modulate red, yellow, and green, orange four kinds of colors;
Surface key has 7, be defined as respectively left and right, upper and lower, return, confirm, disconnected bell, be program button, be connected with the central processing module of controller, detected by the program scanning of central processing module and processed; Buried button 2, panel quilt is absorbed in by the aperture on panel, could need operate with tapering object, be respectively reset key and self-inspection button, reset key is used for controller system and resets, do not need the program scanning of central processing module, self-inspection button is program button, is detected and process by the program scanning of central processing module; Emergency stop switch 1, select mushroom head emergency stop switch, there are 4 normally closed auxiliary contacts and 1 often drive auxiliary contact, 4 normally closed auxiliary contacts to be connected in series in hydrogen fuel cell module in temperature alarming switching circuitry respectively, when switch is pressed, 4 hydrogen fuel cell modules enter safe locking state, realize sudden-stop function.Often drive auxiliary contact for 1 and be used as program button, by the state of Programmable detection emergency stop switch, detect that often opening auxiliary contact closed type executive system suddenly stops program.
Controller has central processing module, for the data processing centre (DPC) of controller, be connected respectively with analog acquisition unit, dry contact communication unit, serial communication unit, TCP-IP communication unit and operational module, receive the data come from each communication interface transmission, show through display module after process.Controller is also connected with audible-visual annunciator, fan, relay and remote communication module simultaneously.
In one embodiment of the invention, be provided with: 3, fan, 1 for cooling channel in controller case, 1 is arranged on the air draft of hydrogen storage cylinder cabinet for hydrogen cylinder cabinet, 1 is arranged on the air draft of hydrogen fuel standby power supply cabinet for standby electric cabinet, fan belt tacho-pulse sensor, for the running status of feedback fan;
Audible-visual annunciator 1, is installed on above standby power supply rack or outside buildings, so that personnel have warning near reminding when not opening cabinet door, sound, light independently control, to cancel sound separately;
4, simulation hydrogen fuel cell module failure relay, a normally closed contact is respectively provided, each corresponding 1 hydrogen fuel cell module, this relay to be concatenated in hydrogen fuel cell module in temperature alarming switching circuitry, when this loop disconnects, hydrogen fuel cell module enters safe locking state, realizes system sudden-stop function.
During concrete enforcement, pressure unit detects the air pressure of each hydrogen cylinder hydrogen supply pipeline, central processing module obtain hydrogen cylinder hydrogen supply pipeline air pressure and compared with preset pressure, when this atmospheric pressure value is lower than preset pressure value, hydrogen in this hydrogen cylinder of central processing module judges is finished, send audible-visual annunciator, data are uploaded to host computer by network, and send SMS alarm by remote communication module to default phone number, in like manner, described hydrogen gas concentration sensor detects the density of hydrogen of each hydrogen cylinder cabinet, central processing module obtain each hydrogen cylinder cabinet inside density of hydrogen and with preset density of hydrogen compared with, when this density of hydrogen value is higher than the density of hydrogen value preset, this hydrogen cylinder cabinet generation hydrogen gas leakage of central processing module judges, in one embodiment of the invention, hydrogen gas leakage is divided into Three Estate, there are three preset values respectively, for 25%LEL, 50%LEL and 75%LEL, LEL is the concentration limit of hydrogen explosion, three corresponding three grades of warnings of preset value: Level 1Alarming, secondary alarm and three grades of alarms, every grade of alarm all can be reported to the police by acousto-optic, SMS alarm, and start the diffusion of fan quickening hydrogen, oxygen concentration sensor detects the oxygen concentration of each hydrogen fuel standby power supply cabinet, central processing module obtain hydrogen fuel standby power supply cabinet oxygen concentration and compared with the oxygen concentration preset, when this oxygen density value is lower than default oxygen density value, the air mass flow of this hydrogen fuel standby power supply cabinet of described central processing module judges is too low, send audible-visual annunciator, data are uploaded to host computer by network, and send SMS alarm by remote communication module to default phone number, temperature sensor detects each hydrogen storage cylinder cabinet, the temperature of each hydrogen fuel standby power supply cabinet and controller case, central processing module obtains hydrogen storage cylinder cabinet, the temperature of hydrogen fuel standby power supply cabinet and controller case and with and respectively compared with the temperature high level preset and temperature low value, when this temperature value is higher than the temperature high level preset, this hydrogen storage cylinder cabinet of described central processing module judges, the temperature of hydrogen fuel standby power supply cabinet or controller case is too high, when this temperature value is lower than the temperature low value preset, this hydrogen storage cylinder cabinet of described central processing module judges, the temperature of hydrogen fuel standby power supply cabinet or controller case is too low, when certain hydrogen storage cylinder cabinet, when the temperature of hydrogen fuel standby power supply cabinet or controller case is too high, controller performs and suddenly stops program, the hydrogen fuel standby power system making temperature too high temporarily quits work, concurrent SMS alarm, start fan for cooling simultaneously, humidity sensor detects the humidity of each hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet, central processing module obtains the humidity of hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet also respectively compared with the humidity value preset, when this humidity value is greater than default humidity value, the humidity of this hydrogen storage cylinder cabinet of central processing module judges or hydrogen fuel standby power supply cabinet is excessive, controller performs and suddenly stops program, the hydrogen fuel standby power system making humidity excessive temporarily quits work, concurrent SMS alarm, smoke transducer detects the smokescope of each hydrogen cylinder cabinet and each hydrogen fuel standby power supply cabinet, when the smokescope of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet exceedes preset value, the dry contact of the described smoke transducer of relative set closes, the central processing module of controller detects that the dry contact of smoke transducer closes, judge that the smog of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet is excessive, send the concurrent SMS alarm of sound and light alarm, level sensor detects the water level of each hydrogen cylinder cabinet and each hydrogen fuel standby power supply cabinet, when the water level of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet did not have the probe of described level sensor, the dry contact of the described level sensor of relative set closes, the central processing module of controller detects that the dry contact of level sensor closes, judge that the water level of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet is too high, send the concurrent SMS alarm of sound and light alarm, vibration transducer detects the vibration acceleration of the cabinet of each hydrogen cylinder cabinet and each hydrogen fuel standby power supply cabinet, when the vibration acceleration of the cabinet of hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet exceedes preset value, the dry contact of the described vibration transducer of relative set closes, the central processing module of controller detects that the dry contact of vibration transducer closes, judge hydrogen cylinder cabinet or the vibrations of hydrogen fuel standby power supply cabinet, send the concurrent SMS alarm of sound and light alarm, the cabinet door opening and closing state of door Magnetic testi hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet, when cabinet door is opened, the dry contact of door magnetic closes, the central processing module of controller detects that the dry contact of a magnetic closes, judge that the cabinet door of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet is illegally opened, send the concurrent SMS alarm of sound and light alarm, DC current transformer detects the electric current of hydrogen fuel standby power supply load circuit, data is passed to the central processing module of controller, hydrogen fuel cell detection module is for detecting the temperature of hydrogen fuel cell, output current, output power, output voltage, super-capacitor voltage and DC-DC conversion efficiency, hydrogen fuel cell detection module has network interface, in order to interconnection network switch, data are passed to controller, and hydrogen fuel cell detection module also has dry contact output simultaneously.
In one embodiment of the invention, when hydrogen fuel standby power supply is in off position, described controller calculates the static hydrogen reserves of hydrogen cylinder, and its computing method are:
M=0.8 × X × V × (P-P
preset)
Wherein: M is the hydrogen reserves of hydrogen cylinder, X is the hydrogen cylinder number of series connection, and V is the volume of this hydrogen cylinder, and P is the current Hydrogen Vapor Pressure of this hydrogen cylinder, P
presetfor the Hydrogen Vapor Pressure preset.
In one embodiment of the invention, when hydrogen fuel standby power supply is in running order, described controller calculates hydrogen fuel standby power supply realtime power duration for subsequent use, and its computing method are:
The amount of substance of the hydrogen of hydrogen cylinder is n=Σ n
i=Σ [(P
i-P
lower limit) V
i× 10
3/ RT];
Described controller detects that when hydrogen fuel standby power supply is in off position the amount of substance of the hydrogen of leakage is n
let out;
The quality of the hydrogen of hydrogen cylinder is m
storage=(n-n
let out) m
rub;
The hydrogen-consuming volume often producing a kilowatt hour electricity is m
consumption=A ρ
hydrogen;
The real-time output power of hydrogen fuel standby power supply is P
time;
Then: P
timet
standby=m
storage/ m
consumption;
Hydrogen fuel standby power supply realtime power duration for subsequent use is t
standby=m
storage/ m
consumptionp
time;
Wherein: i is positive integer, be summed to and i is sued for peace; n
iit is the amount of substance of the hydrogen of i-th hydrogen cylinder; P
iit is the Hydrogen Vapor Pressure of i-th hydrogen cylinder; V
iit is the volume of i-th hydrogen cylinder; P
lower limitthe lower limit of default hydrogen-pressure force value, when Hydrogen Vapor Pressure is lower than this value, hydrogen fuel standby power system cisco unity malfunction; R is ideal gas constant, R=8.314J/mol/k; T is absolute temperature, T (k)=273.15+t (DEG C), and setting t=25 DEG C, then get T=298.15 DEG C; m
rubfor the molal weight of hydrogen, m
rub=2 grams/mol; A is consumption hydrogen constant, represents the volume under normal conditions often producing the consumption hydrogen of a kilowatt hour electricity, A=0.87m
3/ kwh; ρ
hydrogenfor the hydrogen density under normal conditions.
Wherein, P
lower limitfor 0.5MPa.
Wherein, described controller detects the amount of substance n of the hydrogen of leakage when hydrogen fuel standby power supply is in off position
let out, its computing method are as follows:
Calculate the mean value that the Hydrogen Vapor Pressure of N number of hydrogen cylinder when hydrogen fuel standby power supply is in off position reduces
The amount of substance n of the hydrogen leaked
let out=Δ P
allΣ V
i× 10
3/ RT;
Wherein, i is positive integer, is summed to and sues for peace to i; P
iit is the Hydrogen Vapor Pressure of i-th hydrogen cylinder; V
iit is the volume of i-th hydrogen cylinder; R is ideal gas constant, R=8.314J/mol/k; T is absolute temperature, T (k)=273.15+t (DEG C), and setting t=25 DEG C, then get T=298.15 DEG C.
In one embodiment of the invention, described controller has password Authority Verification, for carrying out identity restriction to the parameter setting operation authority of described controller.
In one embodiment of the invention, the acoustic alarm of described audible-visual annunciator and light are reported to the police is separate.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (8)
1. an air-cooled hydrogen fuel standby power supply supervisory system, is characterized in that, comprises detecting element, controller, the network switch and executive component, wherein:
Described detecting element comprises pressure unit, hydrogen gas concentration sensor, oxygen concentration sensor, temperature sensor, humidity sensor, DC current transformer, smoke transducer, level sensor, vibration transducer, Men Ci, hydrogen fuel cell detection module; Described pressure unit is for detecting the air pressure of hydrogen cylinder hydrogen supply pipeline; Described hydrogen gas concentration sensor is for detecting the density of hydrogen of hydrogen storage cylinder cabinet inside; Described oxygen concentration sensor is for detecting the oxygen concentration of hydrogen fuel standby power supply cabinet; Described temperature sensor detects the temperature of hydrogen storage cylinder cabinet, hydrogen fuel standby power supply cabinet; Described humidity sensor detects the humidity of hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet; Described smoke transducer is for detecting the smokescope of hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet, and when the smokescope of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet exceedes preset value, the dry contact of the described smoke transducer of relative set closes; Described level sensor is for detecting the water level of hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet, and when the water level of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet did not have the probe of described level sensor, the dry contact of the described level sensor of relative set closed; Described vibration transducer detects the vibration acceleration of the cabinet of hydrogen cylinder cabinet or hydrogen fuel standby power supply cabinet, when the vibration acceleration of the cabinet of hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet exceedes preset value, the dry contact of the described vibration transducer of relative set closes; The cabinet door opening and closing state of described door Magnetic testi hydrogen cylinder cabinet and hydrogen fuel standby power supply cabinet, when cabinet door is opened, the dry contact of described door magnetic closes; Described DC current transformer is for detecting the electric current of hydrogen fuel standby power supply load circuit; Described hydrogen fuel cell detection module is for detecting the temperature of hydrogen fuel cell, output current, output power, output voltage, super-capacitor voltage and DC-DC conversion efficiency, described hydrogen fuel cell detection module has serial communication interface or network interface, in order to connect the described network switch, described hydrogen fuel cell detection module also has dry contact output simultaneously;
Described controller comprises central processing module, display module, operational module, power supply confluence module and communication module, described display module, described operational module are all connected with described central processing module with described communication module, wherein: described display module is display screen and status indicator lamp, described operational module comprises surface key, buried button and scram button, described surface key is for accepting the button operation of user and described surface key action being passed to described central processing module, described buried button is absorbed in the shell of described operational module with anti-misoperation, the normally opened contact of described scram button is connected with described central processing module, and when the normally opened contact of described scram button closes, described central processing module starts emergent stopping program thus the operation of controller described in urgent interrupt, described power supply confluence module is used for the output voltage of multichannel hydrogen fuel standby power supply being confluxed into a road voltage and exports, described communication module comprises analog acquisition unit, dry contact communication unit, RS485 communication unit, RS232 communication unit, CAN-BUS communication unit and TCP-IP communication unit, described analog acquisition unit and described pressure unit, described hydrogen gas concentration sensor, described oxygen concentration sensor, described current transformer, described temperature sensor and described humidity sensor connect, for the air pressure by hydrogen cylinder hydrogen supply pipeline, and the density of hydrogen of hydrogen storage cylinder cabinet inside, the oxygen concentration of hydrogen fuel standby power supply cabinet, the electric current of hydrogen fuel standby power supply load circuit, hydrogen storage cylinder cabinet, the temperature of hydrogen fuel standby power supply cabinet and controller case, and the humidity of hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet, be passed to described CPU (central processing unit), described dry contact communication unit and described smoke transducer, described level sensor, described vibration transducer, described door magnetic, the dry contact of described hydrogen fuel cell detection module and described scram button connect, its dry contact open and-shut mode is detected for described central processing module, described TCP-IP communication unit is connected with the described network switch, the temperature of the hydrogen fuel cell that the described hydrogen fuel cell detection module for being connected on the described network switch detects, output current, output power, output voltage and super-capacitor voltage are passed to described central processing module, and described RS485 communication unit or described RS232 communication unit are connected with described central processing module, for providing the communication interface of described central processing module and host computer,
Described central processing module obtains the air pressure of hydrogen cylinder hydrogen supply pipeline and compared with preset pressure, when this atmospheric pressure value is lower than preset pressure value, the hydrogen in this hydrogen cylinder of described central processing module judges is finished; Described central processing module obtain hydrogen cylinder cabinet inside density of hydrogen and compared with the density of hydrogen preset, when this density of hydrogen value is higher than the density of hydrogen value preset, this hydrogen cylinder cabinet generation hydrogen gas leakage of described central processing module judges; Described central processing module obtain hydrogen fuel standby power supply cabinet oxygen concentration and compared with the oxygen concentration preset, when this oxygen density value is lower than default oxygen density value, the air mass flow of this hydrogen fuel standby power supply cabinet of described central processing module judges is too low; Described central processing module obtain hydrogen storage cylinder cabinet, hydrogen fuel standby power supply cabinet and controller case temperature and with and respectively compared with the temperature high level preset and temperature low value, when this temperature value is higher than the temperature high level preset, the temperature of this hydrogen storage cylinder cabinet of described central processing module judges, hydrogen fuel standby power supply cabinet or controller case is too high, when this temperature value is lower than the temperature low value preset, the temperature of this hydrogen storage cylinder cabinet of described central processing module judges, hydrogen fuel standby power supply cabinet or controller case is too low; Described central processing module obtains the humidity of hydrogen storage cylinder cabinet and hydrogen fuel standby power supply cabinet also respectively compared with the humidity value preset, when this humidity value is greater than default humidity value, the humidity of this hydrogen storage cylinder cabinet of described central processing module judges or hydrogen fuel standby power supply cabinet is excessive;
Described executive component comprises fan, audible-visual annunciator, relay and remote communication module, described fan is connected with described dry contact communication unit, for: when the density of hydrogen of described central processing module judges hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet or smokescope are run higher than driving described fan during preset value with the diffusion accelerating hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet hydrogen or smog, or/and, when the temperature of described central processing module judges hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet or described controller case runs to accelerate hydrogen storage cylinder cabinet or hydrogen fuel standby power supply cabinet or described controller case cooling higher than driving described fan during preset value, described audible-visual annunciator is used for described pressure unit being detected when described central processing module, described hydrogen gas concentration sensor, described oxygen concentration sensor, described smoke transducer, described level sensor, described shock sensor, described door magnetic or described hydrogen fuel cell detection module wherein at least one the change of dry contact open and-shut mode or judge the temperature of hydrogen fuel cell, output current, output power or output voltage drive described audible-visual annunciator to carry out sound and light alarm when meeting pre-conditioned, described remote communication module is connected with described central processing module, for transmitting monitoring information by network to system host computer under the driving of described central processing module, or send warning message to the phone number preset under the driving of described central processing module, described relay is connected with described dry contact communication unit, stops the operation of hydrogen fuel standby power system for the start up system emergent stopping working procedure when described central processing module judges hydrogen fuel standby power supply fault.
2. air-cooled hydrogen fuel standby power supply supervisory system according to claim 1, it is characterized in that, the density of hydrogen value preset has three, for 25%LEL, 50%LEL and 75%LEL, corresponding Level 1Alarming, secondary alarm and three grades of alarms respectively, wherein LEL is the concentration of lower explosive limit value of hydrogen.
3. air-cooled hydrogen fuel standby power supply supervisory system according to claim 1, is characterized in that, when hydrogen fuel standby power supply is in off position, described controller calculates the static hydrogen reserves of hydrogen cylinder, and its computing method are:
M=0.8 × X × V × (P-P
preset)
Wherein: M is the hydrogen reserves of hydrogen cylinder, X is the hydrogen cylinder number of series connection, and V is the volume of this hydrogen cylinder, and P is the current Hydrogen Vapor Pressure of this hydrogen cylinder, P
presetfor the Hydrogen Vapor Pressure preset.
4. air-cooled hydrogen fuel standby power supply supervisory system according to claim 1, is characterized in that, when hydrogen fuel standby power supply is in running order, described controller calculates hydrogen fuel standby power supply realtime power duration for subsequent use, and its computing method are:
The amount of substance of the hydrogen of hydrogen cylinder is n=Σ n
i=Σ [(P
i-P
lower limit) V
i× 10
3/ RT];
Described controller detects that when hydrogen fuel standby power supply is in off position the amount of substance of the hydrogen of leakage is n
let out;
The quality of the hydrogen of hydrogen cylinder is m
storage=(n-n
let out) m
rub;
The hydrogen-consuming volume often producing a kilowatt hour electricity is m
consumption=A ρ
hydrogen;
The real-time output power of hydrogen fuel standby power supply is P
time;
Then: P
timet
standby=m
storage/ m
consumption;
Hydrogen fuel standby power supply realtime power duration for subsequent use is t
standby=m
storage/ m
consumptionp
time;
Wherein: i is positive integer, be summed to and i is sued for peace; n
iit is the amount of substance of the hydrogen of i-th hydrogen cylinder; P
iit is the Hydrogen Vapor Pressure of i-th hydrogen cylinder; V
iit is the volume of i-th hydrogen cylinder; P
lower limitthe lower limit of default hydrogen-pressure force value, when Hydrogen Vapor Pressure is lower than this value, hydrogen fuel standby power system cisco unity malfunction; R is ideal gas constant, R=8.314J/mol/k; T is absolute temperature, T (k)=273.15+t (DEG C), and setting t=25 DEG C, then get T=298.15 DEG C; m
rubfor the molal weight of hydrogen, m
rub=2 grams/mol; A is consumption hydrogen constant, represents the volume under normal conditions often producing the consumption hydrogen of a kilowatt hour electricity, A=0.87m
3/ kwh; ρ
hydrogenfor the hydrogen density under normal conditions.
5. air-cooled hydrogen fuel standby power supply supervisory system according to claim 4, is characterized in that, P
lower limitfor 0.5MPa.
6. the air-cooled hydrogen fuel standby power supply supervisory system according to claim 3,4, it is characterized in that, described controller detects the amount of substance n of the hydrogen of leakage when hydrogen fuel standby power supply is in off position
let out, its computing method are as follows:
Calculate the mean value that the Hydrogen Vapor Pressure of N number of hydrogen cylinder when hydrogen fuel standby power supply is in off position reduces
The amount of substance n of the hydrogen leaked
let out=Δ P
allΣ V
i× 10
3/ RT;
Wherein, i is positive integer, is summed to and sues for peace to i; P
iit is the Hydrogen Vapor Pressure of i-th hydrogen cylinder; V
iit is the volume of i-th hydrogen cylinder; R is ideal gas constant, R=8.314J/mol/k; T is absolute temperature, T (k)=273.15+t (DEG C), and setting t=25 DEG C, then get T=298.15 DEG C.
7. air-cooled hydrogen fuel standby power supply supervisory system according to claim 4, it is characterized in that, described controller has password Authority Verification, for carrying out identity restriction to the parameter setting operation authority of described controller.
8. air-cooled hydrogen fuel standby power supply supervisory system according to claim 1, is characterized in that, it is separate that the acoustic alarm of described audible-visual annunciator and light are reported to the police.
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Application publication date: 20141224 Assignee: Beijing blue Amperex Technology Limited Assignor: Li Ran Contract record no.: 2015990000731 Denomination of invention: Air cooling type hydrogen fuel stand-by power monitoring system License type: Exclusive License Record date: 20150818 |
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