Utility model content
The purpose of the utility model is to provide a kind of vehicle-mounted liquid organic hydrogen storage hydrogen-feeding systems, solve and deposit in the prior art
The liquid organic hydrogen storage hydrogen-feeding system problem that energy consumption is high, hydrogen utilization rate is low.
The utility model is the technical scheme adopted is that vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system, including passes sequentially through pipe
Road connects into the liquid hydrogen storage material case in circuit, vehicle-mounted hydrogen release device, circulating pump;
Vehicle-mounted hydrogen release device includes the metering pump for passing sequentially through pipeline connection, catalytic unit, gas-liquid separator;Catalytic unit,
The bottom of gas-liquid separator passes through pipeline and connect with circulating pump;The top of gas-liquid separator is connected by pipeline and hydrogen outlet
It is logical;The liquid hydrogen storage material case is connect by pipeline with metering pump.
The utility model is also characterized by:
Hydrogen concentration sensor is provided in liquid hydrogen storage material case;The pipeline of metering pump to catalytic unit is provided with flow biography
Sensor and pressure sensor;Temperature sensor and heating device are provided in catalytic unit;Go out at the top of gas-liquid separator to hydrogen
The pipeline of mouth is disposed with hydrogen gas pressure sensor and hydrogen valve;Tail washings liquid level sensor is provided in gas-liquid separator;
The pipeline that gas-liquid separator bottom is connect with circulating pump is provided with tail washings valve.
Concentration sensor, flow sensor, pressure sensor, temperature sensor, tail washings liquid level sensor, Hydrogen Vapor Pressure pass
Sensor is connect with controller;Controller is connect with metering pump, heating device, tail washings valve, hydrogen valve, circulating pump respectively.
Catalytic unit is catalytic bed.
It is multilayer network structure inside catalytic bed.
The material of good thermal conductivity and high-insulativity is all made of outside catalytic bed with inside.
The beneficial effects of the utility model are:
(1) liquid organic hydrogen storage material releases hydrogen first quick and back slow, and the circulatory system of the utility model passes through liquid organic hydrogen storage
Hydrogen speed is released in the hydrogen content control of material, and therefore, fuel cell can be still maintained under complicated operating condition needs hydrogen amount.
(2) the catalysis heating of liquid organic hydrogen storage material is only carried out in catalytic unit, rather than organic to all liquid
Hydrogen storage material whole heating simultaneously, therefore, energy saving while, improves efficiency.
(3) gas-liquid separator in the utility model is reduced using the control of accurate pressure, Liquid level and time control
Hydrogen string is back to the situation of liquid hydrogen storage material case.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model;
Fig. 2 is the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system controller signals interface schema of the utility model;
Fig. 3 is the control flow chart of metering pump in the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model;
Fig. 4 is the control flow chart of the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system catalytic unit of the utility model;
Fig. 5 is tail washings valve controlling flow journey in the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system gas-liquid separator of the utility model
Figure.
In figure, 1. liquid hydrogen storage material casees, 2. vehicle-mounted hydrogen release devices, 3. circulating pumps, 4. metering pumps, 5. catalytic units, 6. gas
Liquid/gas separator, 7. tail washings valves, 8. hydrogen valves, 9. hydrogen concentration sensors, 10. flow sensors, 11. pressure sensors, 12.
Temperature sensor, 13. tail washings liquid level sensors, 14. hydrogen gas pressure sensors, 15. heating devices.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model connects into the liquid storage in circuit including passing sequentially through pipeline
Hydrogen stuffing-box 1, vehicle-mounted hydrogen release device 2, circulating pump 3;
Vehicle-mounted hydrogen release device 2 includes the metering pump 4 for passing sequentially through pipeline connection, catalytic unit 5, gas-liquid separator 6;Catalysis dress
The bottom for setting 5, gas-liquid separator 6 passes through pipeline and connect with circulating pump 3;The top of gas-liquid separator 6 passes through pipeline and hydrogen
Outlet;Liquid hydrogen storage material case 1 is connect by pipeline with metering pump 4.
It is further:
Hydrogen concentration sensor 9 is provided in liquid hydrogen storage material case 1;The pipeline of metering pump 4 to catalytic unit 5 is provided with stream
Quantity sensor 10 and pressure sensor 11;Temperature sensor 12 and heating device 15 are provided in catalytic unit 5;Gas-liquid separator
The pipeline of 6 top to hydrogen outlets is disposed with hydrogen gas pressure sensor 14 and hydrogen valve 8;Setting in gas-liquid separator 6
There is tail washings liquid level sensor 13;The pipeline that 6 bottom of gas-liquid separator is connect with circulating pump 3 is provided with tail washings valve 7.
It is further:
Concentration sensor 9, flow sensor 10, pressure sensor 11, temperature sensor 12, tail washings liquid level sensor 13,
Hydrogen gas pressure sensor 14 is connect with controller;Controller respectively with metering pump 4, heating device 15, tail washings valve 7, hydrogen
Valve 8, circulating pump 3 connect.
It is further:
Catalytic unit 5 is catalytic bed.
It is further:
It is multilayer network structure inside catalytic bed.
It is further:
The material of good thermal conductivity and high-insulativity is all made of outside catalytic bed with inside.
The preferred embodiment of the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model are as follows:
As shown in Figure 1, including the liquid hydrogen storage material case 1, metering pump 4, stream for passing sequentially through LOHC pipeline and connecting into circuit
Quantity sensor 10, pressure sensor 11, catalytic unit 5, gas-liquid separator 6;The bottom of catalytic unit 5 passes through LOHC pipeline and follows
3 connection of ring pump;The bottom of gas-liquid separator 6 is connect by being provided with the LOHC pipeline of tail washings valve 7 with circulating pump 3;Gas-liquid point
Top from device 6 is connected to by being provided with the pipeline of hydrogen valve 8 with hydrogen outlet.Wherein, catalytic unit 5 is catalytic bed, is urged
Changing is multilayer network structure inside bed, and catalytic bed outside and the internal material for being all made of good thermal conductivity and high-insulativity.Catalysis
Bed is external to be provided with heating device 15;Hydrogen concentration sensor 9 is provided in liquid hydrogen storage material case 1;Setting inside catalytic bed
There is temperature sensor 12;Tail washings liquid level sensor 13 is provided in gas-liquid separator 6;To hydrogen valve 8 at the top of gas-liquid separator 6
Pipeline be provided with hydrogen gas pressure sensor 14.
As shown in Fig. 2, hydrogen concentration sensor 9, flow sensor 10, pressure sensor 11, temperature sensor 12, tail washings liquid
Level sensor 13, hydrogen gas pressure sensor 14 are connect by conducting wire with controller;Controller by conducting wire respectively with metering pump
4, heating device 15, tail washings valve 7, hydrogen valve 8, circulating pump 3 connect.
The course of work of the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model are as follows: metering pump is by liquid organic hydrogen storage material
Material is extracted out from liquid hydrogen storage material case, and catalytic bed is injected into after flow sensor, pressure sensor, and the hydrogen of generation passes through
Pipeline enters gas-liquid separator, and hydrogen is discharged from the top of gas-liquid separator to be used for fuel cell;Tail washings is from gas-liquid separator
Bottom is back to liquid hydrogen storage material case;Reacted liquid organic hydrogen storage material is back to liquid hydrogen storage material from catalytic bed bottom
Hopper.
The control principle of the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model are as follows:
Step a, controller are received by CAN interface from fuel cell power generation workload demand in power assembly CAN bus
Information is simultaneously translated into for hydrogen amount information;
Step b, controller receive hydrogen concentration signal C from hydrogen concentration sensor, flow sensor flow F,
The pressure signal P 1 of pressure sensor, the temperature signal T of temperature sensor, hydrogen gas pressure sensor Hydrogen Vapor Pressure signal P2;
Step c, controller are excellent with the signal progress multiple target that multi-objective optimization algorithm receives step a, step b
Change;
Step d, controller export speed controling signal Uf1 and adjust its revolving speed, temperature control signals Ut to urging to metering pump
Makeup sets and adjusts its catalytic temperature, control signal Uv1 to hydrogen valve door controls it and turns off or on, controls signal Uv2 to tail washings
Valve controls that it is turned off or on, speed controling signal Uf2 to circulating pump adjusts its revolving speed.
Wherein, as shown in figure 3, fuel cell power generation workload demand increases, metering pump discharge increases the control flow of metering pump
Add, to measure the release for supplying hydrogen greatly;Fuel cell power generation workload demand reduces, and metering pump discharge reduces, to measure small reduction hydrogen
The release of gas.
As shown in figure 4, fuel cell power generation workload demand increases, heating devices heat is catalyzed the control flow of catalytic unit
Device accelerates the release of hydrogen so that catalysis be promoted to react.Fuel cell power generation workload demand reduces, and heating device, which reduces, to be added
Hot temperature reduces the release of hydrogen to slow down catalysis reaction.
The control flow of gas-liquid separator opens hydrogen valve as shown in figure 5, when Hydrogen Vapor Pressure reaches threshold value, hydrogen from
Release at the top of gas-liquid separator;When tail washings liquid level reaches threshold value, unlatching tail washings valve, tail washings is back to from gas-liquid separator bottom
Liquid hydrogen storage material case;Wherein, tail washings valve opening time takes high-accuracy time control, can avoid hydrogen crossfire with tail washings one
It rises and discharges.
The vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model is a little are as follows:
(1) the vehicle-mounted liquid organic hydrogen storage hydrogen-feeding system of the utility model discharges hydrogen using vehicle-mounted hydrogen release device, rather than
Hydrogen is discharged in traditional hydrogen container.Liquid organic hydrogen storage material discharges hydrogen, root in the catalytic bed in vehicle-mounted hydrogen release device
The amount and catalytic temperature that liquid organic hydrogen storage material participates in reaction are adjusted according to the hydrogen content concentration of hydrogen storage material case.Because heating is office
Portion's heating, only the hydrogen storage material heating to participating in reacting and needing to discharge hydrogen, substantially reduces thus it is possible to consume.Hydrogen is not released
The liquid organic hydrogen storage material of gas is back to hydrogen storage material case by circulating pump, the utilization rate and efficiency of hydrogen storage material of having deducted a percentage.
(2) traditional gas-liquid separator does not control tail washings accurately.The gas-liquid separator of the utility model uses hydrogen
Atmospheric pressure, tail washings liquid level trigger the emission control of tail washings, when hydrogen reaches certain pressure, and tail washings accumulation is a certain amount of when,
Tail washings valve is opened, discharges tail washings downwards, tail washings valve uses high-precision control, and hydrogen is avoided to connect from gas-liquid separator bottom
Pipeline discharge.
(3) liquid organic hydrogen storage material releases hydrogen first quick and back slow, and the circulatory system of the utility model passes through liquid organic hydrogen storage
Hydrogen speed is released in the hydrogen content control of material, and therefore, fuel cell can be still maintained under complicated operating condition needs hydrogen amount.
(4) the catalysis heating of liquid organic hydrogen storage material is only carried out in catalytic unit, rather than organic to all liquid
Hydrogen storage material whole heating simultaneously, therefore, energy saving while, improves efficiency.
(5) gas-liquid separator in the utility model is reduced using the control of accurate pressure, Liquid level and time control
Hydrogen string is back to the situation of liquid hydrogen storage material case.