阅读说明：本技术 一种甲醇水重整制氢机及综合电路 (Methanol-water reforming hydrogen production machine and integrated circuit ) 是由 高继明 唐崇岂 管显德 刘文强 于 2020-07-01 设计创作，主要内容包括：本发明公开了一种甲醇水重整制氢机及综合电路,包括：机本体、甲醇水水箱、制氢装置、换热器、主控装置、电源,燃烧腔、汽化室、换热器与甲醇水水箱之间的管路上设有单向阀,主控装置包括显示屏、电路板及设置在电路板上的综合电路、微处理器、4G模块和多个通迅端口,电源与主控装置电性连接。本发明从工作电源设计、高边驱动电源、信号驱动、信号反馈、通讯电路等均采用隔离设计,可防止输入电源、风机、泵体杂讯对整个制氢机电路造成干扰,可防止制氢机某个配件的损坏造成整个系统的崩溃,使甲醇重整制氢部分核心组件在系统故障时得到关键维护。本发明提高了系统运行的可靠性,为全面实现制氢机整体热平衡、压力平衡等设计提供了保障。(The invention discloses a methanol water reforming hydrogen production machine and an integrated circuit, comprising: the machine body, the methanol water tank, the hydrogen production device, the heat exchanger, the main control device and the power supply are provided with one-way valves on pipelines between the combustion cavity, the vaporization chamber, the heat exchanger and the methanol water tank, the main control device comprises a display screen, a circuit board, an integrated circuit, a microprocessor, a 4G module and a plurality of communication ports, the integrated circuit, the microprocessor, the 4G module and the communication ports are arranged on the circuit board, and the power supply is electrically connected with the main control device. The invention adopts isolation design from working power supply design, high-side driving power supply, signal driving, signal feedback, communication circuit and the like, can prevent noise of an input power supply, a fan and a pump body from interfering the whole hydrogen production machine circuit, can prevent the whole system from being crashed due to the damage of a certain accessory of the hydrogen production machine, and ensures that the core component of the methanol reforming hydrogen production part is maintained in a critical way when the system fails. The invention improves the reliability of system operation and provides guarantee for comprehensively realizing the design of the overall heat balance, pressure balance and the like of the hydrogen production machine.)

1. The utility model provides a hydrogen machine and integrated circuit are reformed transform to methanol-water which characterized in that includes:

the machine body is provided with a gas circuit interface, a communication interface, a power socket and a key respectively, and the key is arranged on the front side of the machine body;

the device comprises a machine body, a methanol water tank, a liquid level sensor, a high-pressure pump and a front valve, wherein the machine body is provided with a machine body;

the hydrogen production device comprises a combustion cavity, a vaporization chamber, a reforming chamber, a filter and a purifier, wherein the combustion cavity, the vaporization chamber, the reforming chamber, the filter and the purifier are sequentially connected through pipelines, and the combustion cavity, the vaporization chamber, the reforming chamber, the filter and the purifier are arranged in a hot box;

the heat exchanger is respectively connected with the vaporizing chamber, the low-pressure hydrogen buffer device and the methanol water tank through pipelines, and a one-way valve is arranged on a pipeline between the heat exchanger and the methanol water tank;

the main control device comprises a display screen, a circuit board, and a comprehensive circuit, a microprocessor, a 4G module and a plurality of communication ports which are arranged on the circuit board, wherein the display screen, the microprocessor, the 4G module and the plurality of communication ports are respectively electrically connected with the comprehensive circuit, and the main control device is arranged inside the machine body;

and the power supply is electrically connected with the main control device.

2. The methanol-water reforming hydrogen production machine and integrated circuit as claimed in claim 1, wherein the power supply is 48V/24VDC, and one end of the power supply is electrically connected with an external power supply through the power socket.

3. The methanol-water reforming hydrogen production machine and integrated circuit according to claim 1, wherein the vaporizing chamber is respectively connected with the combustion chamber, the reforming chamber, the filter and the purifier through pipelines, the filter is respectively connected with the purifier and the reforming chamber through pipelines, the vaporizing chamber and the reforming chamber are respectively internally provided with an electric heating device and at least two first temperature sensors, and the first temperature sensors and the electric heating device are respectively and electrically connected with the main control device.

4. The methanol-water reforming hydrogen production machine and integrated circuit according to claim 1, wherein an igniter and a second temperature sensor are arranged in the combustion chamber, a fan and an exhaust port are respectively arranged on two sides of the combustion chamber, and the igniter, the second temperature sensor, the fan and the exhaust port are respectively and electrically connected with the main control device.

5. The methanol water reforming hydrogen production machine and the integrated circuit according to claim 1, wherein an air pressure sensor is arranged inside the low-pressure hydrogen buffering device, a one-way electromagnetic valve is arranged on the pipeline between the low-pressure hydrogen buffering device and the vaporizing chamber, and the air pressure sensor and the one-way electromagnetic valve are respectively and electrically connected with the main control device.

6. The methanol water reforming hydrogen production machine and the integrated circuit according to claim 1, wherein the display screen is a touch display screen, and the display screen is embedded in the front of the machine body and positioned on the upper part of the key.

7. The methanol-water reforming hydrogen production machine and integrated circuit according to claim 1, wherein a pump pressure sensor is arranged in the low-pressure hydrogen buffer device, and the pump pressure sensor is electrically connected with the main control device.

8. The methanol water reforming hydrogen production machine and the integrated circuit according to claim 1, wherein the integrated circuit comprises a switching power supply circuit, a hydrogen production machine/blower full-isolation circuit, a 12V-to-5 VDC switching voltage-stabilized power supply circuit, a 5 VDC-to-3.3 VDC linear voltage-stabilized power supply circuit, a 24V-to-12 VDC switching voltage-stabilized power supply circuit, a 12 VDC-to-5 VDC linear voltage-stabilized power supply circuit and a temperature sensor sampling circuit.

Technical Field

The invention relates to the technical field of hydrogen production by hydrogen energy, in particular to a methanol-water reforming hydrogen production machine and an integrated circuit.

Background

Hydrogen energy is a recognized clean energy, and China has made various progress in the field of hydrogen energy, is expected to become one of the leading countries of hydrogen energy technology and application in the near future, and is also considered by international public as the country which is most likely to realize hydrogen energy industrialization first. Products such as electrolytic water hydrogen production, liquid hydrogen tanks and the like appear in the market; the hydrogen production by water electrolysis is inverted at the end and can only be used for peak clipping and valley filling or redundant electricity. In other words, the world problem of the liquid hydrogen tank is storage and transportation, and the storage of hydrogen is necessarily high pressure, however, the high pressure hydrogen is very dangerous, including explosion in a hydrogen station, and once the high pressure hydrogen is in use, a building can be directly destroyed like a missile. The market calls equipment which can 'how much hydrogen is needed to prepare how much low-pressure hydrogen', and then a methanol-water reforming hydrogen production machine appears. The purity of hydrogen production is as high as 99.99%, the highest hydrogen output pressure is only 25PSI, and the fuel consumption rate is as low as 0.85kg/KWh @ rated.

At present, several related enterprises in China are mostly conceptual. Mainly imitate foreign product, fry the notion, all be huge loss in the actual popularization, its concrete reason lies in:

1) the system is not well balanced, so that the working environment of main parts exceeds the range and the service life is short;

2) the stability of the system is not enough, and the main chip and the peripheral circuit are very critical due to a series of functional requirements of a pump, a fan, temperature sampling, pressure sampling and the like. The data processing precision of the system is not enough, so that equipment malfunction is caused, or the precision of the sampled data is not good, so that the state of an accessory worker is not coordinated and is easy to damage, and the like; if the circuit damage rate of a certain company in Dongguan exceeds 50% in one year, the failure rate of the whole machine is more than 100%;

3) in the traditional error region, the methanol-water reforming hydrogen production belongs to the chemical industry class, so that the responsible person of the project is basically the class of chemical industry major, doctor and even expert professor, and the more and more the spectrum is deviated. It is said that a certain large chemical industry enterprise in China has not progressed to conduct related research for years. The actual technology of hydrogen production by reforming methanol has been disclosed for decades, and the theoretical chemical knowledge of high school is in fact sufficient. Moreover, most of the personnel usually ask PLC components to perform experiments, so that the research and development cost is high, the efficiency is low, a very simple experiment is realized, and the research and development process by the chemical experts is usually months and half years, even a year.

4) The recognition is in error and is in research in the same industry. Many expert-level doctors, professors, etc. will find core accessories (purifiers, pumps, catalysts, sensors), etc. to be preferred, while not thinking about balance management is the first premise.

The integrated circuit of the methanol water reforming hydrogen production machine in the existing market is generally based on the realization function, but has poor reliability, which is related to more and complicated accessories adopted by the methanol water reforming hydrogen production technology.

The integrated circuit of the methanol water reforming hydrogen production machine in the existing market has the defects of insufficient data sampling stability, short service life of driving equipment, frequent false operation and damage to the overall balance.

Disclosure of Invention

The invention aims to provide a methanol water reforming hydrogen production machine and an integrated circuit, which have the advantages of simple structure, reasonable design, convenient installation, high hydrogen production efficiency and environmental protection.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a methanol-water reforming hydrogen production machine and an integrated circuit comprise:

the machine body is provided with a gas circuit interface, a communication interface, a power socket and a key respectively, and the key is arranged on the front side of the machine body;

the device comprises a machine body, a methanol water tank, a liquid level sensor, a high-pressure pump and a front valve, wherein the machine body is provided with a machine body;

the hydrogen production device comprises a combustion cavity, a vaporization chamber, a reforming chamber, a filter and a purifier, wherein the combustion cavity, the vaporization chamber, the reforming chamber, the filter and the purifier are sequentially connected through pipelines, and the combustion cavity, the vaporization chamber, the reforming chamber, the filter and the purifier are arranged in a hot box;

the heat exchanger is respectively connected with the vaporizing chamber, the low-pressure hydrogen buffer device and the methanol water tank through pipelines, and a one-way valve is arranged on a pipeline between the heat exchanger and the methanol water tank;

the main control device comprises a display screen, a circuit board, and a comprehensive circuit, a microprocessor, a 4G module and a plurality of communication ports which are arranged on the circuit board, wherein the display screen, the microprocessor, the 4G module and the plurality of communication ports are respectively electrically connected with the comprehensive circuit, and the main control device is arranged inside the machine body;

and the power supply is electrically connected with the main control device.

Preferably, the power supply is 48V/24VDC, and one end of the power supply is electrically connected with an external power supply through the power socket.

Preferably, the vaporizing chamber is respectively connected with the combustion chamber, the reforming chamber, the filter and the purifier through pipelines, the filter is respectively connected with the purifier and the reforming chamber through pipelines, the vaporizing chamber and the reforming chamber are respectively internally provided with an electric heating device and at least two first temperature sensors, and the first temperature sensors and the electric heating device are respectively electrically connected with the main control device.

Preferably, an igniter and a second temperature sensor are arranged in the combustion cavity, a fan and an exhaust port are respectively arranged on two sides of the combustion cavity, and the igniter, the second temperature sensor, the fan and the exhaust port are respectively electrically connected with the main control device.

Preferably, an air pressure sensor is arranged inside the low-pressure hydrogen buffering device, a one-way electromagnetic valve is arranged on the pipeline between the low-pressure hydrogen buffering device and the vaporizing chamber, and the air pressure sensor and the one-way electromagnetic valve are respectively and electrically connected with the main control device.

Preferably, the display screen is a touch display screen, and the display screen is embedded in the front of the machine body and is located on the upper portion of the key.

Preferably, a pumping pressure sensor is arranged in the low-pressure hydrogen buffer device, and the pumping pressure sensor is electrically connected with the main control device.

Preferably, the comprehensive circuit comprises a switching power supply circuit, a hydrogen production machine/blower full-isolation circuit, a 12V-to-5 VDC switching stabilized power supply circuit, a 5 VDC-to-3.3 VDC linear stabilized power supply circuit, a 24V-to-12 VDC switching stabilized power supply circuit, a 12 VDC-to-5 VDC linear stabilized power supply circuit and a temperature sensor sampling circuit.

The invention has the advantages and beneficial effects that:

the invention adopts isolation design from working power supply design, high-side driving power supply, signal driving, signal feedback, communication circuit and the like, can prevent the noise of the input power supply, the fan and the pump body from interfering the whole hydrogen production circuit and influencing data such as sampling, feedback and the like, can prevent the breakdown of the whole system caused by the damage of a certain accessory of the hydrogen production machine, and ensures that the core component of the methanol reforming hydrogen production part is maintained in a critical way when the system is in failure, for example, the purifier needs real-time hydrogen maintenance in a high-temperature state. The invention improves the reliability of system operation and provides guarantee for comprehensively realizing the design of the overall heat balance, pressure balance and the like of the hydrogen production machine.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a methanol-water reforming hydrogen production machine and an integrated circuit according to the invention.

In the figure, 1-gas path interface, 2-communication interface, 3-methanol water tank, 4-blower, 5-hydrogen production device, 51-combustion chamber, 52-vaporization chamber, 53-reforming chamber, 54-filter, 55-purifier, 6-heat exchanger, 7-sensor component, 71-pressure sensor, 72-liquid level sensor, 73-hydrogen sensor, 74-pump pressure sensor, 8-pressure hydrogen buffer device, 9-main control device, 91-display screen, 92-circuit board, 10-valve body component.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a methanol-water reforming hydrogen production machine and an integrated circuit include:

the machine body is respectively provided with a gas circuit interface 1, a communication interface 2, a power socket and a key, and the key is arranged on the front side of the machine body;

a liquid level sensor is arranged in the methanol water tank 3, a high-pressure pump and a front valve are arranged at one end of the methanol water tank 3, and the methanol water tank 3 is arranged in the machine body;

specifically, in the present embodiment, the valve body assembly 10 includes a one-way valve, and/or a three-way solenoid valve, and/or a flow-limiting valve.

Specifically, in this embodiment, the methanol water tank 3 is provided with a liquid level sensor 72 therein, the methanol water extraction requires a high-pressure pump and the liquid level sensor 72 provided in the methanol water tank 3 of the front valve, and the methanol water extraction requires the high-pressure pump and the valve body assembly 10.

The hydrogen production device comprises a combustion cavity 51, a vaporization chamber 52, a reforming chamber 53, a filter 54 and a purifier 55, wherein the combustion cavity 51, the vaporization chamber 52, the reforming chamber 53, the filter 54 and the purifier 55 are sequentially connected through a pipeline, and the combustion cavity 51, the vaporization chamber 52, the reforming chamber 53, the filter 54 and the purifier 55 are arranged in a hot box;

specifically, in the present embodiment, the sensor assembly 7 includes a gas pressure sensor 71, a liquid level sensor 72, a hydrogen gas sensor 73, and a pump pressure sensor 74.

The heat exchanger 6 and the heat exchanger 6 are respectively connected with the vaporizing chamber, the low-pressure hydrogen buffer device 8 and the methanol water tank 3 through pipelines, and a one-way valve is arranged on a pipeline between the heat exchanger 6 and the methanol water tank 3;

the main control device 9 comprises a display screen 91, a circuit board 92, and a comprehensive circuit, a microprocessor, a 4G module and a plurality of communication ports which are arranged on the circuit board 92, wherein the display screen 91, the microprocessor, the 4G module and the plurality of communication ports are respectively electrically connected with the comprehensive circuit, and the main control device 9 is arranged inside the machine body;

and the power supply is electrically connected with the main control device 9.

In the preferred embodiment of the present invention, the power supply is 48V/24VDC, and one end of the power supply is electrically connected to an external power supply through a power socket.

In the preferred embodiment of the present invention, the vaporizing chamber 52 is respectively connected to the combustion chamber 51, the reforming chamber 53, the filter 54 and the purifier 55 through pipes, the filter 54 is respectively connected to the purifier 55 and the reforming chamber 53 through pipes, the vaporizing chamber 52 and the reforming chamber 53 are respectively provided with an electric heating device and at least two first temperature sensors, and the first temperature sensors and the electric heating device are respectively electrically connected to the main control device 9.

In a preferred embodiment of the present invention, an igniter and a second temperature sensor are disposed in the combustion chamber 51, a fan 4 and an exhaust port are disposed on two sides of the combustion chamber 51, and the igniter, the second temperature sensor, the fan 4 and the exhaust port are electrically connected to the main control device 9.

In a preferred embodiment of the present invention, an air pressure sensor is disposed inside the low pressure hydrogen buffer device 8, a one-way solenoid valve is disposed on a pipeline between the low pressure hydrogen buffer device 8 and the vaporization chamber, and the air pressure sensor and the one-way solenoid valve are electrically connected to the main control device 9 respectively.

Specifically, in the embodiment, the methanol water enters the heat exchanger 6 through the one-way valve and then enters the vaporization chamber 52, the temperature of the vaporization chamber 52 is required, the heating can be performed by electric heating or burning or be used together, and the electromagnetic valve control, the electric heating control (HT1), the igniter control, the temperature detection thermocouple (TC3) and the ignition success or failure judgment (TC1) are involved; the gasified methanol steam enters the reforming chamber 53 for catalysis, and the temperature monitoring points of the reforming chamber 53 are 2 or more (TC4, TC 5); if cold start requires electrical heating (HT 2). The hydrogen rich produced after catalysis may contain catalyst dust and require filtration, filter 54 temperature monitoring (TC 6); pure hydrogen needs to be purified from the filtered hydrogen-rich gas, the temperature of the purifier 55 needs to meet the conditions, auxiliary electric heating (HT3) and a temperature monitoring point (TC7) are needed; the steps relate to internal pressure, and a pressure sensor and a pumping pressure sensor are needed; the purified hydrogen enters a heat exchanger and then enters a hydrogen buffer device 8, and a pipeline electromagnetic valve switching and a pressure sensor are required when the hydrogen pressure reading requirement exists; the purified residual gas of the purifier 55 enters a combustion chamber through the valve body assembly 10, ignition and combustion are carried out, the process needs to switch an electromagnetic valve and an igniter, ignition judgment is carried out, oxygen (air) is needed as necessary combustion conditions, and air must be fed by using a blower fan; whether the blower works normally needs to be judged, and because the requirement on the purity of hydrogen is extremely high, gas before running each time needs to be discharged, three-way electromagnetic valves are needed for switching;

the hydrogen production device 5 belongs to endothermic reaction, and the heat generated by combustion, such as the high temperature heat of the reforming and purifying device 55, can be conducted to the outside, and heat insulation of a heat box is needed; the comprehensive environment needs timing cooling or local cooling, and more fans and temperature probes are needed (TC8)

In the preferred embodiment of the present invention, the display screen 91 is a touch display screen, and the display screen 91 is embedded in the front of the main body and located above the keys.

In the preferred embodiment of the present invention, a pumping pressure sensor is disposed in the low pressure hydrogen buffer device 8, and the pumping pressure sensor is electrically connected to the main control device 9.

In the preferred embodiment of the invention, the comprehensive circuit comprises a switching power supply circuit, a hydrogen production machine/blower full-isolation circuit, a 12V-to-5 VDC switching stabilized power supply circuit, a 5 VDC-to-3.3 VDC linear stabilized power supply circuit, a 24V-to-12 VDC switching stabilized power supply circuit, a 12 VDC-to-5 VDC linear stabilized power supply circuit and a temperature sensor sampling circuit.

Specifically, in this embodiment, an external communication port such as RS485 or CAN is required for controlling the hydrogen production machine or for application in linkage with the hydrogen fuel cell; a communication port needs to be opened for a client application; local control keys or triggers; local touch display screen control or the hydrogen production machine needs remote application, needs a 4G module communication port and needs to obtain fault information and solve the fault information in real time; the hydrogen production machine belongs to high temperature and high pressure design, so whether each accessory can work at temperature, internal balance must be managed and controlled, each sampling data needs to be fed back or a driving signal is very accurate, and the requirement on circuit design is high. And in addition, interference sources such as a fan 4, a pump and the like exist, and the design and the processing of a circuit are particularly critical. The operating power requirements for each part or subassembly are high; critical devices of a hydrogen production part need extra maintenance, for example, the purifier 55 needs hydrogen maintenance in a high-temperature state, and related maintenance valves need to be opened at regular time, so that the whole system cannot be broken down due to partial system faults; each part needs to be designed in an isolation way; the hydrogen production machine has various components, application management communication interfaces, diversified operation modes and the like, so that the selection of a microprocessor is also critical, and the microprocessor adopts STM32F407ZGTX or STM32F7 series with higher grade;

based on the above requirements and the like, the circuit design of the methanol-water reforming hydrogen production machine needs special treatment rather than only function realization. Such as: the power supply (high-side output) of the igniter needs to bear 5A impact within 1-3 seconds, otherwise, the igniter cannot successfully ignite within 3 seconds; the design of each part is not only isolated, but also capable of dealing with possible crosstalk, considering design allowance and high-voltage protection of each signal interface, and the reliability of the hydrogen production machine can be guaranteed!

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.