Hydrogen pressure sensorThe safety of hydrogen is an inevitable problem in the development of fuel cell industry. We comprehensively analyze the safety of hydrogen pressure sensor from the aspects of hydrogen characteristics, storage and transportation process, safety design of fuel cell vehicles, safety of vehicles in accidents and extreme cases, and safety specifications of hydrogenation facilities. Through a detailed analysis, we have worked to address concerns about hydrogen safety and explain why we believe that the safety of hydrogen pressure sensors in energy applications is comparable to traditional fuel and lithium batteries.

1. Hydrogen is not easy to form explosive aerosols, leakage energy is low, and explosion equivalent is low

(1) The diffusion rate of hydrogen is 3.8 times that of natural gas, but the leakage energy is only about 40% of natural gas;

(2) Hydrogen has great buoyancy and diffusivity, and the leaked hydrogen will rise rapidly and diffuse rapidly in all directions, making it difficult for the concentration to reach the concentration required for explosion;

(3) The explosion energy of hydrogen is very low in ordinary gas, only 1/22 of gasoline;

At present, most of the hydrogen storage bottles of fuel cell vehicles are wrapped with aluminum lining and carbon fiber, and most of the fuel pipelines are made of 316 stainless steel, which can avoid the safety risks caused by hydrogen embrittlement.

2. As an industrial gas, hydrogen has a long history of use, complete safety specifications, and standardized operating procedures

At this stage, hydrogen long tube trailer is the mainstream way of hydrogen storage and transportation. From hydrogen charging to transportation, it is equipped with complete safety devices and detailed operating procedures to effectively reduce storage and transportation risks.

3. Hydrogen safety is also considered in the design of fuel cell vehicles

On-board hydrogen supply system: starting from two aspects of technical design and material selection, multiple guarantees for hydrogen safety are realized. Through the perfect safety auxiliary device, implement good over-temperature and over-pressure protection, select appropriate materials and protective structure, and establish a complete hydrogen storage system;

Fuel cell vehicles: rigorous factory testing and a tight hydrogen monitoring system ensure safe operation.

3. In the accident and extreme test environment, the vehicle still maintains good safety performance

In the case provided by Toyota, the on-board hydrogen storage bottle did not rupture or explode, regardless of penetration or leakage ignition. In addition, due to the strong diffusion of hydrogen, it is difficult for hydrogen leakage to cause an explosion accident even in a relatively closed underground parking lot or tunnel.

4. Hydrogenation infrastructure has relevant technical specifications, and the industry standard system is being improved at an accelerated pace.

As an important part of building the future fuel cell vehicle network, many places, including China, have issued corresponding safety design specifications. As long as the operation meets the design specifications, safety can be effectively guaranteed.

Based on the above, we believe that hydrogen as a new energy,Hydrogen pressure sensorIts security applications are already very mature. The existing safety design of fuel cell vehicles can effectively solve the problem of hydrogen leakage and reduce the possibility of hydrogen explosion in various occasions such as serious collisions. Compared with fuel vehicles and lithium battery vehicles, the safety factor of fuel cell vehicles is not low.

Jiangmen Hengmin Intelligent Control Instrument Co., Ltd. is a pressure transmitter manufacturer, mainly engaged in oil pressure sensors, wall-mounted boiler water pressure sensors, urea pump pressure sensors, hydrogen pressure sensors, pressure calibrators, automobile pressure sensors, water pump pressure sensors, water pressure Sensors, intelligent pressure controllers, high pressure sensors and other products. Our company found in the research industry production activities that with the increasing popularity of the Internet of Things and intelligent manufacturing concepts, the demand for pressure sensors in my country has grown rapidly in recent years. In response to the needs of the era of intelligent manufacturing, our company has developed high-precision testing instruments and special production system equipment for pressure sensor manufacturers to help sensor manufacturers greatly reduce the labor intensity of testing, reduce the number of workers, improve product quality, improve production efficiency and reduce production costs.