What are the advantages of detecting hydrogen by quantum conductivity principle?

        The monitoring of hydrogen concentration in hydrogen generator tank is a crucial step to ensure safe operation. The following content summarizes the core points of hydrogen concentration detection in hydrogen generator tank:        First, Detection methods        1. Sensor detection        Catalytic combustion sensor: Determines the hydrogen concentration by detecting the heat generated by the combustion of hydrogen in the presence of a catalyst. This sensor has a high sensitivity to hydrogen, but may be interfered with by other combustible gases.        Electrochemical sensor: The REDOX reaction of hydrogen on the electrode is used to generate a current, and the current is proportional to the concentration of hydrogen. The electrochemical sensor has good selectivity and stability.        Semiconductor sensor: Based on the interaction between hydrogen and semiconductor material, its resistance value changes, and then reflects the change of hydrogen concentration. The response speed of semiconductor sensor is fast, but its detection accuracy is relatively low.        Quantum conductivity sensor: Based on the principle of quantum conductivity, hydrogen molecules will interact with electrons in the material after contacting the sensor's sensitive material, changing the energy state and distribution of electrons. It has the advantages of high sensitivity and fast response speed.        2. Gas chromatography        Gas chromatography is a high-precision analytical method that can accurately determine the concentration of hydrogen. It works by separating hydrogen from other gases and then detecting the hydrogen content with a detector. Gas chromatography is suitable for occasions where the concentration of hydrogen is required to be high, but the equipment cost is high and the operation is relatively complicated.        Second, the detection position        1. Inside the hydrogen generator tank        Install a sensor or sampling point inside the hydrogen generation tank to directly detect the production and accumulation of hydrogen. In this way, hydrogen leaks or abnormally elevated concentrations can be detected in time.        Pay attention to select the appropriate installation position to avoid interference or damage.        2. Hydrogen outlet        Detecting the hydrogen concentration at the hydrogen discharge outlet can understand the emission of hydrogen and ensure that the emission meets the environmental requirements.        At the same time, it can also monitor the operating status of the hydrogen generator tank to determine whether there are problems such as leakage.        3. Your surroundings        Check the environment around the hydrogen generator tank to ensure that hydrogen leakage does not pose a hazard to personnel and equipment.        The detection point can be set in the vent, aisle and other positions near the hydrogen generator tank.        Third, Detection frequency        1. Continuous detection        For important hydrogen generating tanks, continuous detection can be used to monitor the hydrogen concentration in real time. In this way, problems can be detected in time and measures can be taken to ensure safe operation.        Continuous inspection can be done using sensors or on-line monitoring systems.        2. Regular testing        For the general hydrogen generator tank, regular testing can be carried out, such as daily, weekly or monthly testing. Regular testing can be done by means of portable detectors or sampling analysis.        3. Special case detection        After the hydrogen generator is repaired, maintained or modified, special testing should be carried out to ensure the safety performance of the equipment.        In addition, when hydrogen leaks or other anomalies are found, they should also be tested immediately.        Fourth, security measures        1. Alarm system        Install hydrogen concentration alarm device, when the hydrogen concentration exceeds the set safety limit, sound and light alarm signal is issued to remind personnel to take measures.        The alarm device should have reliable performance and accurate alarm threshold.        2. Ventilation system        The hydrogen generator tank should be equipped with a good ventilation system to ensure that the hydrogen can be discharged in time to reduce the hydrogen concentration.        The ventilation system should be kept in normal operation and inspected and maintained regularly.        3. Safe operation procedures        Develop strict safety operation procedures to regulate the operation and maintenance process of hydrogen generator tank. Operators should be trained to be familiar with hydrogen characteristics and safety precautions.        During the operation, strictly follow the safety operation rules to avoid accidents such as hydrogen leakage.        In short, the detection of hydrogen concentration in hydrogen generator tank is an important link to ensure the safety of hydrogen use. Hydrogen leakage and explosion accidents can be effectively prevented by selecting appropriate detection method and location, determining reasonable detection frequency and taking corresponding safety measures.        

                The vehicle hydrogen sensor has the following applications in the hydrogen fuel cell storage cabinet:        1. Hydrogen leak monitoring:        ● Real-time detection: A large amount of hydrogen is stored in the hydrogen fuel cell energy storage cabinet, and because the hydrogen molecule is very small, it is easy to leak from the tiny gap in the storage container or pipeline. The on-board hydrogen sensor can monitor the hydrogen concentration in the energy storage cabinet and the surrounding environment in real time, and once the hydrogen concentration exceeds the safety threshold, the sensor will immediately issue an alarm to remind the staff to deal with it in time. For example, in daily operation, if the sealing parts of the energy storage cabinet are aging or damaged, resulting in hydrogen leakage, the sensor can quickly detect and issue an early warning to avoid safety accidents caused by hydrogen leakage.        ● Location of the leak point: By placing multiple hydrogen sensors in different locations of the energy storage cabinet, the approximate location of the hydrogen leak can be initially determined according to the alarm information of the sensor, helping the staff to quickly locate the leak point for timely maintenance and treatment, and reducing the risk and loss of hydrogen leakage.        2. Hydrogen purity test:        The purity of hydrogen has an important effect on the performance and efficiency of hydrogen fuel cells. The on-board hydrogen sensor can detect the purity of hydrogen entering the energy storage tank and the hydrogen output from the energy storage tank to the fuel cell to ensure that the purity of hydrogen meets the working requirements of the fuel cell. If the hydrogen is mixed with other impurity gases, such as oxygen, nitrogen, carbon monoxide, etc., the sensor will detect the change in purity and send a corresponding signal, so that measures can be taken to purify or replace the hydrogen to ensure the normal operation of the fuel cell and efficient power generation.        3. System condition monitoring and fault diagnosis:        ● Monitoring the state of the energy storage system: the sensor can monitor the working state of the hydrogen fuel cell energy storage cabinet, such as hydrogen pressure, temperature and other parameters. Through real-time monitoring of these parameters, we can understand the operation of the energy storage system and determine whether the system is in normal working state. For example, when the hydrogen pressure is too high or too low, it may affect the performance and safety of the fuel cell, and the sensor will feedback the status parameters in time for the staff to adjust and maintain.        ● Auxiliary fault diagnosis: If the energy storage cabinet fails, the on-board hydrogen sensor can provide relevant fault information to help the staff diagnose the fault. For example, when the sensor detects an abnormal change in the concentration of hydrogen, but there are no obvious signs of leakage, it may be that some parts in the energy storage cabinet have failed, affecting the normal storage and delivery of hydrogen. At this time, the staff can carry out further inspection and maintenance according to the sensor information, improving the efficiency and accuracy of fault diagnosis.        4. Safety warning and emergency treatment:        ● Safety warning: During the operation of the hydrogen fuel cell storage cabinet, the on-board hydrogen sensor can be linked with other safety equipment and systems to form a complete safety warning system. When the sensor detects hydrogen leakage or other abnormal conditions, it will immediately trigger the safety warning device, such as sound and light alarm, automatic cutting device, etc., to remind the staff to take emergency measures in time to ensure the safety of personnel and equipment.        ● Emergency treatment support: In the event of an emergency, the real-time monitoring data of the sensor can provide an important reference for emergency treatment. For example, in dangerous situations such as fire or explosion, sensors can help workers understand the leakage and concentration distribution of hydrogen in order to develop reasonable emergency treatment plans, such as choosing appropriate fire suppression methods and evacuating personnel.