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After sending 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 live in the 909 community for a period of time, so as not to run back to Benxi and make his parents jump.

During the Chinese New Year, Comrade Liang began to work on the first day of the Lunar New Year, and thoroughly implemented the spirit of hardship in the front and pleasure in the back, and went home after dark every day, and waited until Liang Yuan received a call from Su Liangyu on the fifth day of the new year and had to rush to Shengjing, Liang Yuan obviously felt that he proposed to go back to Shengjing to entertain the guests first, Li Yuanling and Liang Jiangping breathed a sigh of relief.

Looking at his parents with a relieved look, Liang Yuan couldn't cry or laugh, the family got together less and parted more in the past half a year, although no one mentioned this problem in the three of them, but during the Chinese New Year, even the dedicated old Comrade Liang did not dare to go home at night, and went home on time before 9 o'clock every day, Li Yuanling was even more full of turning back into a good wife and mother, cleaning up the housework every day, washing and preparing three meals on time, as if returning to the days of teaching in Xihu Middle School.

Now it's okay, Liang Yuan first broke the tacit understanding, what should the family do, this year is completely over, and Li Yuanling only returned to Shengjing one day later than Liang Yuan.

Although the ordinary low-voltage circuit breaker does not have any high-tech content, the principle of structural beam is very familiar, but the details of the size and specifications of Liang Yuan can not remember, for large-scale batch production of industrial products, each design factor, each parameter has its own must be reasonable side, if the change is likely to cause difficulties in the production process or the lack of product performance.

Therefore, Liang Yuan instructed Qi Lianshan to let the Hong Kong branch collect what could be collected on the market. All brands of low-voltage circuit breakers were bought, and then mailed back to China as a reference for Liang Yuan to restore the low-voltage circuit breakers in his previous life.

At present, the French Merlan Gerland Electric Company, which has not been acquired by Schneider Electric, will put into operation in Tianjin with a wholly-owned factory at the beginning of this summer, while Siemens, Mitsubishi and other electrical giants will enter the country in a big way no later than 89 years at the latest, leaving little time for Liang Yuan.

Liang Yuan was holding a large number of low-voltage circuit breakers. plunged headlong into the great cause of upgrading. For the low-voltage circuit breaker industry, the freely tripping air circuit breaker has been born in Europe as early as 1905, after so many years of development. The main technical patents of low-voltage circuit breakers have long passed the protection period, and the current global patent protection for low-voltage circuit breakers is more focused on new utility patents and arc extinguishing technology. Therefore, Liang Yuan was also apprehensive before disassembling the mainstream low-voltage circuit breaker switch in the eighties, for fear that the current mainstream products would overlap with the product structure in his memory.

Liang Yuan breathed a sigh of relief after dismantling the circuit breaker at hand, at present, several major foreign electrical manufacturers are still using the traditional multi-longitudinal gate or metal ion gate arc extinguishing scheme on small circuit breakers to improve the breaking capacity of circuit breakers, and none of them adopt the mainstream thermistor and circuit breaker joint application scheme in the future.

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

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

In the early nineties, ABB applied thermistors to the field of circuit breaker manufacturing and design for the first time, which greatly improved the breaking capacity of the circuit breaker and reduced the production cost of the circuit breaker.

At the beginning of 88, ABB's two predecessor companies, Sweden's Assia and Switzerland's Brown Farry, had not yet merged, and this epoch-making technology in the field of circuit breakers had certainly not yet been born.

The rest of the problems are easy to do, the PTC beam using polymer resin is powerless for the time being, but it is still very easy to get some titanic acid thermistors that are formed by general ceramic technology and sintered at high temperatures.

On the fifteenth day of the lunar calendar, Liang Yuan, who was busy in the dark, 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 the Lantern Festival, I don't know that today is the fifteenth day of the first lunar month. Liang Yuan said while gobbling up the Lantern Festival.

"I don't know what you're busy with all day, a few days ago, I saw that the administrative department sent a large push of plastic parts to the electronic device room, saying that you ordered it. ”

"Uncle was busy producing 25S undercarriages, and the electrical engineer who had just been transferred back to the depot had nothing to do, so I organized people to make some gadgets. Liang Yuan said with a smile.

After Zhao Tiemin and Liu Zhigao returned to Beiping, they first built the second phase of the Qinghai-Tibet Railway project and the public opinion on the development of gas turbine locomotives, and then turned out the application from the archives to support the transfer of electrical engineers from the three districts and three lines to Liaoning over the years, and found two enterprises with the most application reports to do the pilot, and issued a document that would set up a gas turbine locomotive research team in Shengjing with the Northeast Locomotive Factory as the core.

After the Ministry of Railways' document was issued, it caused a lot of waves in the previous year, but in view of the Northeast Locomotive Factory in recent years, the name of the road has been poor, so before the Lunar New Year, everyone is mainly discussing, no engineer has a substantial willingness to transfer, during the New Year, the engineers who have the intention to return to their hometowns have returned to Liaoning's hometown for the New Year, and then looked at the newly established Northeast Locomotive Factory, Benxi, Shengjing two factories to go around. Countless people are really moved, not to mention the factor of returning to their hometowns, it is very tempting to have a salary that is more than double their current salary.

Just after the New Year, the Northeast Locomotive Factory in Shengjing received more than 10 applications for transfer one after another, and Liang Haiping waved his pen to approve all those who were involved with the railway, and as a result, there were seven or eight engineers who were afraid of long nights and dreams. Arrange for his wife or relatives to go through the transfer procedures in the original unit, and he went straight to the locomotive factory to report.

Although there was no leader who could take out the electronic device room, Liang Yuan still built the basic structure of the room. Just when a coolie came to the door, Liang Yuan pulled it to the electronic device room to restore the circuit breaker in his previous life. Although these engineers are not quite professional, they can still calculate the load, engage in circuit principles, and provide a power distribution plan.

When Liang Yuan didn't make such a big enterprise, he liked to tinker with some bits and pieces of handmade products, Li Yuanling didn't take it to heart after hearing it, nodded and said: "Don't delay the work of Su Gong, I see that the real room is about to become your personal use." ”

Liang Yuan smiled, but didn't answer, and used a spoon to weigh a lantern festival and threw it into his mouth.

"Have Jiajia and Fei Fei spent fifteen years in Beiping?" asked Li Yuanling.

"Yes. The day before yesterday, Jiajia called me and said that she might not be back for the fifteenth. ”

"Mom, when is your gas turbine igniting and running?"

"It's going to take more than a week, and when the unit is ignited, I'll have to invite you, the boss behind the scenes, to visit. Li Yuanling said with a smile.

Liang Yuan glanced at his lips and said, "Can you not go?" You and my dad should be all the way, and my dad gave me a big red envelope of 100 yuan during the Chinese New Year this year. said that I grew up, and the New Year's money should also rise, but just after the New Year, I was not moved yet, so I instructed Duan's finance to discuss with my uncle and study the problem of spending 1,000 yuan to buy a cheap air conditioning fan. ”

"Let's not mention that there are no affordable air conditioning fans at all. Even if there is, I should discuss it with Wang Weiguo, and I didn't hit my head with the idea of discussing it with my uncle, it's really sad. Liang Yuan rested his head on the table, trying to make a grief-stricken appearance.

"It's not okay not to go to the ignition of a gas turbine. But mom won't be as unproductive 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 and pick up people, chatting casually, and after a while, the door rang, and the sound of the security door being opened sounded.

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

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

"Fei Fei, isn't she a good girl who speaks ill of people behind her back, doesn't she say that she can't come back?" Liang Yuan could guess with his eyes closed that it was a little girl who slandered him.

Liang Yuan and Li Yuanling put down the dishes and chopsticks and walked into the living room, only to find that Tang Wan also came over with the two little girls.

"Aunt Ning is good. Liang Yuan said honestly.

"Xiaowan, are you back too? I heard Xiaoyuan say that you plan to stay in Beiping for the fifteenth year. Li Yuanling said with some surprise.

"My girl is raised for nothing, Yuanling hurry up and change Xiaoyuan to me. Tang Wan nodded to Liang Yuan and said with a smile.

"Mom......" Lori, who was wearing a light blue bow, hugged Tang Wan's arm and shook it coquettishly.

When Liang Yuan and Ning Wanjia called a few days ago, they said that Nanhu Park planned to hold a lantern exhibition during 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 lamps as early as a few years ago, and Su Liangyu felt that this was a good opportunity to show off the chip automation control, so he agreed to the matter. For Liang Yuan, who was well-informed in his previous life, he didn't take the lantern show seriously at all, and only after fifteen years did he casually mention it to Ning Wanjia.

Ning Wanjia's mind originally wanted to go back to Shengjing and Liang Yuan for the Lantern Festival, and when she heard Liang Yuan mention the Lantern Festival, she just found a suitable reason, and Ning Wanfei, who had long been tired and crooked in Beiping, hit it off, and at the strong request of the two little girls, Tang Wan had to take the two loli back to Shengjing to see the lights.

A few people talked and laughed, Zhou Heng also went upstairs, ready to take Li Yuanling and Liang Yuan to the Science and Technology Park, Tang Wan waved her hand and said: "Your family is busy every day without seeing people, which class do you go to during the holidays, Yuanling and I go to the shopping mall, I saw several new clothes in Beiping, and no one helped me to staff and didn't buy it, today I went to East Asia and the joint venture to see if there is the same model, Yuanling helped me to staff it." ”

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

Liang Yuan looked at the cheering appearance of the two loli and said with a bitter face, "Can I go to work?"

"What do you say?" the two little girls asked with a smile as they grabbed Liang Yuan's ears.

Watching the four elated women pack up their things and prepare to go downstairs, Liang Yuan hated the Lantern Festival incomparably. (To be continued......)

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