After seeing Jian Zhikang away, Liang Yuan did not return to Benxi. In order to recall the air circuit breaker in his memory, Liang Yuan decided to talk about it in the 909 community for a while, so as not to run back to Benxi and make his parents frustrated.

During the Chinese New Year, Comrade Lao Liang started working from the first day of the Chinese New Year, and thoroughly implemented the spirit of the ** staff to endure hardships and enjoy themselves later. He had to go home after dark every day. When Liang Yuan received a call from Su Liangyu and had to rush to Shengjing, Liang Yuan clearly felt that he proposed to go back to Shengjing to entertain guests first, and Li Yuanling and Liang Jiangping breathed a sigh of relief.

Seeing his parents feeling relieved, Liang Yuan was very amused and crying. The family had been together for more than half a year. Although the three of them had guilty feelings, no one mentioned this issue, even the dedicated Comrade Liang did not dare to stay at night during the Chinese New Year. He went home on time before 9 o'clock every day. Li Yuanling became a virtuous wife and mother. She cleaned up housework every day and prepared three meals on time, as if she was back to her day of teaching at Xihu Middle School.

Now, Liang Yuan first broke the tacit understanding. The family should do whatever they should do. This year has been completely over. Li Yuanling returned to Shengjing one day later than Liang Yuan.

Although ordinary low-voltage circuit breakers do not have high-tech content and are very familiar with the principle and structure of Liang Yuan, Liang Yuan cannot remember the details of the size and specifications. For large-scale batch production of industrial products, each design factor and each parameter have its own reasonable side. If it is randomly changed, it may cause difficulties in the production process or lack of product performance.

Therefore, Liang Yuan instructed Qilianshan to ask the Hong Kong branch to buy all the brands of low-voltage circuit breakers that can be collected on the market and then mailed them back to China as a reference for Liang Yuan to restore the low-voltage circuit breakers in his previous life.

The French Melanrilan Electric Company, which has not yet been acquired by Schneider Electric, will be put into production in Tianjin early this summer, and electrical giants such as Siemens and Mitsubishi will enter the country at the latest no later than 1989, so there is really not much time left for Liang Yuan.

Liang Yuan held a large number of low-voltage circuit breakers and plunged into the great business of upgrading. For the low-voltage circuit breaker industry, the air circuit breaker that was freely tripped in 1905 was born in Europe. After so many years of development, the main technical patents for low-voltage circuit breakers have long passed the protection period. At present, the global patent protection for low-voltage circuit breakers is more concentrated on new practical patents and arc extinguishing technologies. Therefore, before Liang Yuan dismantled the mainstream low-voltage circuit breaker switches in the 1980s, he was also nervous, fearing that the current mainstream products and the product structures in his memory would coincide.

Liang Yuan breathed a sigh of relief after dismantling the circuit breaker at hand. At present, several major foreign electrical manufacturers are still using traditional multi-longitudinal or metal ion gate arc extinguishing schemes on small circuit breakers to improve the breaking capability of the circuit breaker. None of them adopts the mainstream thermistor (ptc) and circuit breaker joint application schemes in later generations.

For circuit breakers, breaking capacity is an important technical indicator. When the circuit breaker is in operation, the greater the overload current the circuit breaker can withstand in a short time. The more it can reflect the quality of the circuit breaker. When the circuit is short-circuited, it often produces instantaneous high temperature and high voltage, melts the contacts and breaks down the insulator, causing the circuit breaker to fail, and then burns the protected equipment.

The combined application solution of the thermistor and circuit breaker is to use the PTC effect of the thermistor itself, that is, the resistance increases linearly with the increase of temperature. When breaking the short-circuit current, most of the energy of the breaking short-circuit current will be converted into thermal energy through the thermistor, and a small part will be borne by the breaking arc. Combined with the arc extinguishing device provided by the circuit breaker, the burden on the circuit breaker can be reduced and the breaking capacity and stability of the circuit breaker can be greatly improved.

Liang Yuan naturally didn't know that the world's first application solution to use thermistor (ptc) and circuit breakers was the masterpiece of the famous ABB Electric Company in his previous life. In the early 1990s, ABB Company applied thermistors to the field of circuit breakers manufacturing and design for the first time, greatly improving the breaking capacity of the circuit breakers and reducing the production cost of circuit breakers. This technology made great contributions to ABB Electric in the field of low-voltage electrical.

In the early 1988, two predecessors of ABB, Swedish Asia Company and Switzerland's Brown BFARIC (bbc), had not yet merged. This epoch-making technology in the field of circuit breakers has certainly not yet been born.

The remaining problems are easy to deal with. PTC Liang Yuan, which uses polymer resin, is powerless for the time being, but it is still easy to make some titanic acid-based thermistors formed using general ceramic processes and sintered at high temperatures. First, take up the pit and make problems such as performance and materials slowly improve in the future.

On the fifteenth day of the lunar calendar, Liang Yuan was busy and dark. He looked at the Lantern Festival cooked by Li Yuanling in the morning and realized that today was the Lantern Festival.

"Mom, if you don't cook Lantern Festival, I wouldn't know that today is the fifteenth day of the first lunar month." Liang Yuan said while eating Lantern Festival voraciously.

"I don't know what you're busy with all day. A few days ago, I saw the Administration Department send a large plastic piece to the electronics laboratory and said you made the reservation."

"My uncle is busy producing 25S undercarriages. The electrical engineer who just transferred back to the factory had nothing to do, so I organized the people and made some small things." Liang Yuan said with a smile.

After Zhao Tiemin and Liu Zhigao returned to Peiping, they first created the second phase of the Qinghai-Tibet Railway project and developed gas turbine locomotives. Then they found the application of electrical engineers who had supported the third district and the third line to return to Liaoning from the archives room. They found two companies with the most application reports for pilot projects and issued a document to form a gas turbine locomotive research team in Shengjing with the Northeast Locomotive Factory as the core. The document emphasized that in accordance with the principle of voluntariness, priority was given to the application of transfer from the branch engineers to the hometown that year.

After the Ministry of Railways issued the document, it caused quite a stir before the New Year. However, given that the Northeast Locomotive Factory has been in bad reputation in recent years, everyone was talking about it before the Lunar New Year. No engineers had a substantial intention to transfer jobs. During the Chinese New Year, engineers who were willing to return to their hometowns in Liaoning for the New Year, and then took a look at the newly established Northeast Locomotive Factory, Benxi and Shengjing factories. Countless people were really moved. Not to mention the factors of returning home, it would be very tempting to just have more than twice their current salary.

Just after the Chinese New Year, the Northeast Locomotive Factory in Shengjing received transfer applications from more than ten people. Liang Haiping waved his pen and approved everything that was related to the railway. As a result, there were seven or eight engineers who were afraid of having too many nights and dreams. He arranged for his wife or relatives to go through the transfer procedures at his original unit, and he went straight to the locomotive factory to report.

Although there is no leader in the electronic device laboratory who can make a move, Liang Yuan still built the basic structure of the laboratory. Just as a coolie came to him, Liang Yuan pulled him to the electronic device laboratory to restore the circuit breaker from his previous life. Although these engineers are not very professional, they are still competent in calculating loads, working on circuit principles, and providing power distribution solutions.

When Liang Yuan didn't create such a big company, he liked to tinker with some fragmented handmade products. Li Yuanling didn't take it seriously after hearing this. He nodded and said, "Don't delay Su Gong and his work. I think the device laboratory is almost exclusive to you."

Liang Yuan smiled, but did not answer, and weighed a Lantern Festival with a spoon and threw it into his mouth.

"Have Jiajia and Feifei been in Peking for fifteen?" Li Yuanling asked.

"Well. Jiajia called me the day before yesterday and said he might not be back for the fifteenth day."

"Mom, when will your gas turbine be ignited and run?"

"It will take more than a week. When the unit is ignited and runs, you, the boss behind the scenes, have to ask you to visit it." Li Yuanling said with a smile.

Liang Yuan glanced at his mouth and said, "Can you not go? You and my dad should be together. This year, my dad gave me a big red envelope of 100 yuan. He said that I was growing up and the New Year's money should rise. As a result, just after the New Year, I was not over yet. So I instructed the finance department of Duan Li to discuss with my uncle and study the issue of spending 1,000 yuan to buy a affordable air conditioner fan."

"Not to mention that there is no affordable air conditioning fan at all. Even if there is one, we should discuss it with Wang Weiguo. It's not that I'm going to talk to my uncle to put my idea on my head. It's so sad." Liang Yuan put his head on the table and tried to look heartbroken.

"It is not okay not to participate in the ignition operation of the fuel engine. But my mother is not as unpromising as your dad." Li Yuanling rubbed Liang Yuan's hair and said with a smile.

The mother and son were waiting for Zhou Heng to come to pick up the person, while chatting casually. After a while, the door rang and the sound of the security door being opened.

Li Yuanling looked at Liang Yuan's inquiring gaze, shook her head and said, "You Grandpa Wu and Grandma Liao didn't say that they were going back to Shengjing for the Lantern Festival."

"There is no one in the living room, Xiaoyuan must be still sleeping." The delicate loli's clear voice instantly filled the entire room.

"Fefei, I'm not a good girl who is talking badly behind my back. Didn't I say I can't come back?" Liang Yuan could guess with his eyes closed, and which little girl was slandering him.

Liang Yuan and Li Yuanling put down their bowls and chopsticks and walked into the living room, but found that Tang Wan was also coming with the two little girls.

"Hello Aunt Ning." Liang Yuan said honestly.

"Xiaowan, are you back too? I heard from Xiaoyuan that you plan to stay in Peking for the fifteenth day of the lunar month." Li Yuanling said with some surprise.

"I am a girl, so I'm in vain. Yuanling quickly exchanges Xiaoyuan for me." Tang Wan nodded to Liang Yuan and said with a smile.

"Mom..." Loli with a light blue bow hugged Tang Wan's arm and shook it coquettishly.

A few days ago, Liang Yuan and Ning Wanjia called and said that Nanhu Park planned to hold a lantern exhibition on the Lantern Festival, and the Science and Technology Park would also participate in lantern making activities. As a neighbor, the Science and Technology Park received an invitation to make lights as early as the New Year. Su Liangyu felt that this was a good opportunity to showcase chip automation control, so he agreed. For Liang Yuan, who was well-informed in his previous life, he did not take the lantern show seriously at all. He just mentioned it to Ning Wanjia casually after his fifteenth.

Ning Wanjia had originally wanted to go back to Shengjing and Liang Yuan to celebrate the Lantern Festival. When Liang Yuan picked up the lantern show, he just found a suitable reason. He hit it off with Ning Wanfei, who had been in Peking for a long time. At the strong request of the two little girls, Tang Wan had to take two lolita back to Shengjing to watch the lanterns.

While a few people were joking, Zhou Heng also went upstairs and was about to pick Li Yuanling and Liang Yuan up to the Science and Technology Park. Tang Wan waved her hand and said, "Your family is busy every day and there are no people to go to during the holidays. Yuanling and I went shopping in the mall. I saw several new clothes in Peking, but no one helped me to advise, so I didn't buy them. Today I went to East Asia and the Joint Camp to see if there were any of the same styles. Yuanling helped me to advise."

"Okay, I can't even raise the interest of shopping if Xiaowan doesn't come alone." Li Yuanling said happily.

Liang Yuan looked at the two lolita cheering and said with a bitter face: "Can I go to work?"

"What do you think?" The two little girls asked with a smile by grabbing Liang Yuan's ear.

Seeing the four cheerful women packing their things and getting ready to go downstairs, Liang Yuan hated the Lantern Festival in great hatred. (To be continued...)
Chapter completed!