"Ask the sky" is equipped with a "air purifier" in Chengdu, allowing astronauts to breathe freely at the space station

At 14:22:22 on July 24th, Wenchang Aerospace launched in Hainan, the flames flying, the sound shock, and the Long March 5 Yao San Carrier Rocket Lift Space Station asked the experimental cabin to fly the sky. As the first experimental cabin of the China Space Station, after asking the "place" of the Tiantian experimental cabin, it will provide a good environment for spacemen to carry out space experiments.

(Screenshot of CCTV News)

Sichuan Aerospace Beacon Services Control Technology Co., Ltd., which belongs to the Seventh Hospital of China Aerospace Technology Group Co., Ltd., assembled and integrated carbon dioxide removal subsystems and trace harmful gas removal subsystems. It is installed in the space station, like a "air purifier", to ensure aerospace The life of the staff.

It is understood that Sichuan Aerospace Beacon Services Control Technology Co., Ltd. is in Wenjiang, Chengdu.

On the earth, we have a steady fresh air. We inhaled oxygen, exhaled carbon dioxide, and through photosynthesis, carbon dioxide was recycled by plants to achieve a wonderful and stable cycle.

However, in the sealing cabin of the space station, if it is not controlled, as the carbon dioxide concentration in the surrounding air continues to increase, the human body will face the risk of shortness of breath, loss of consciousness, or even death.

In order to ensure that the astronauts work and live safely throughout the flight, they must create a basic environment suitable for survival inside the space station and provide necessary living support guarantees. Such functions are mainly implemented by the space station environmental control and life security score system (referred to as the environmental control system).

"Human aerospace, life is closed. Safety is our bottom line. It is necessary to ensure that astronauts can breathe freely in the space station. The two subsystems that are integrated in this total installation integration are an important part of the environmental control biological insurance. One is carbon dioxide Remove the subsystem and remove the carbon dioxide exhaled by the astronauts in the space station, and the other is the trace -harmful gas removal subsystem, which provides a guarantee for the life of the astronauts. "Zhang Qiang, deputy general manager of the company's special valve business department.

Zhang Qiang said that unlike ordinary air purifiers, the two subsystems used in the space station are more complicated, more particular about materials, high process requirements, and difficult to reference in any information. As large as a stand -alone, as small as a pipeline, every part of the "Air Purifier" is specially customized. How to "discharge troops" in the system is relying on independent exploration.

"There is only one design drawing, no technology, no reference model, we gather the core force discussions of the technical technology, adopt the form of brainstorming, the light simulation solution is made 10 sets, and finally the advantages and disadvantages of 5 sets of plans are integrated. The initial first model. "Zhang Qiang said that since 2015, the members of the task team of Sichuan Aerospace Beacon Services Control Technology Co., Ltd. have begun to prepare for the war, producing a number of" first "to create this special air purifier.

"For example, the welding method of pipelines uses thin -walled welding, which is a special process. The thin management road is long. The less welded the weld is required one after another. Therefore, each one must be strictly controlled. Only a qualified one can weld the next one. After each section is welded, it is necessary to explore and process the time processing in the oven for 48 hours. After the welded seam is melted in the second time, the fish scale -like texture will be formed. For example, ripples are the best proof of welding control and stability. "Huang Chuandong, director of the company's process and technology department, said.

There are also two comrades of Hu Buyun and Zhang Jinde, responsible for the installation and testing of the two subsystems. "At that time, the gas catheter in the product mostly used metal hard pipes when designing, but the complicated pipeline installation brought great difficulty to the assembly work. In order to meet the requirements of the space station, we almost found some materials on the market on the market. After studying it, the ripple tube with certain flexible characteristics was used to replace the verification of tens of thousands of bending life tests, more than 1 million high -pressure gas gas density test verifications, which can be resistant to external pressure and impact resistance. The improvement measures were finally recognized. "Zhang Jinde said.

In the past five years, the development task team has overcome a number of technical bottlenecks, breaking through 4 core technologies and 11 technologies. In September 2020, the company successfully completed the production and adjustment of the two sets of subsystems and delivered the product to use.

Today, the launch of the test compartment launch is a complete success. The company employees, including Zhang Jinde and Hu Buyun, watched the live broadcast, excitedly.

"The products we make ourselves are very shocking. It is really moved to watch the product installed on the rocket. It is really moved. Our products can be used to use it for astronauts. It is our pride!" Zhang Jinde said.

Chengdu Daily Jinguan News Reporter Li Juan Editor He Qi Tie Editor Liu Yonghao Picture Interviewee provided

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