"Feng Shan, please continue to calculate the design of the two options of suction and rotation."
Vonn now became an electrician again and began to review electrical formulas with difficulty. In line with the principle of starting from simplicity and considering the power supply problem, he chose to trial-produce the simplest DC relay first. However, after all, he was not a major in this major. The circuit and college physics courses he had learned in his freshman year had long been returned to the teacher. Not to mention those in high school.
Xiu Yuxuan provided him with some texts of the trial production materials he had originally produced, as well as some scrapped trial production samples. It can be seen that the repairman's understanding of relays is no better than his own.
The two of them were trying to figure out the relationship between the relay's suction power and the power supply and coil parameters, and the progress was difficult. Von Nuo read a lot of books on relays, and there were very few books on this formula and they were very simple. You can only figure it out on your own.
The relay in the original space-time only needs to control the working circuit and is not very concerned about the suction power; instead, it uses the suction power of the relay to drive the mechanical structure. From this perspective, what he built was not a relay at all, but a simple electromagnet.
Feng Nuo was a little frustrated by his new discovery, and the long calculations made his brain hurt, so he pushed a pile of draft paper in front of Feng Shan and said, "First check what I have calculated before, and then proceed with the design. There are a few key points.”
"First, based on our self-made enameled wire with a wire diameter of 0.3mm, don't forget to ask Kanai to send enameled wire samples to the central laboratory to measure the thickness of the paint layer;"
"Okay, no problem, teacher." Feng Shan replied, took the pad and pencil and began to record the key points.
"Second, we need to limit the total power. First, consider that the turn-on time of each inspection hole is 0.1s. At least ensure that the 24v/20,000mah battery of Mr. Zhong can support the inspection of 20,000 cards, and it is best to inspect 5 holes. More than 10,000 pieces.”
According to Feng Nuo's rough estimate, if 50,000 holes are to be inspected, each of which is calculated based on the normal situation of 160 holes, the power-on time must be more than 200 hours, and the power of each coil must be maintained at about 2 watts. It is not easy to ensure that the suction power is not too strong under such circumstances.
"OK."
"Third, the suction power should preferably be more than 5 Newtons."
The existing mechanical materials may not guarantee a very light mechanical control mechanism, and the suction power may be difficult to drive.
"good."
"Well...if you still have the energy, consider the effects of temperature rise and magnetic flux leakage on the coil. I haven't considered this part now. I can experiment slowly later."
"Um."
"Oh, also, many materials say that in order to reduce the influence of residual magnetism, copper or brass pins or washers should be added to the top of the armature. Don't forget to include the thickness."
"..."
"Unlike theoretical scientific research, the most important thing in applied technology development is to be based on existing conditions. With these constraints, we can move forward in the direction of solving problems instead of talking aimlessly. And as long as the path is clear, Now, problems such as slow speed, low efficiency, poor quality, and high energy consumption can all be overcome one by one by concentrating our efforts.”
After von Nuo got rid of this bunch of headaches, he came up with a high-sounding theory - of course, this is also based on experience. Feng Nuo was also a problem solver in the original space-time laboratory. After finishing, he walked to the bed in the corner of the workroom and fell on it. Feng Shan was used to Feng Nuo's nagging and exhorting. She silently took the pile of twisted acting papers and started to look through them.
Feng Nuo was very tired, but he still felt very excited. He tried hard to stop his thoughts and let his brain rest. It was dinner time at this time. Qian Yuzhi and Li Janai both went to the canteen and bought lunches on the way back. The faint roar of the server could be heard next door, the rustling of Feng Shan's calculations and writing in the room, and the occasional sounds of chants and metal clashing from the distant machinery factory workshop, slowly relaxing his tense nerves. Feng Nuo liked this feeling very much. Gradually, these sounds became farther and farther away from him... At some point, he fell asleep.
…
When he woke up, it was completely dark outside. Only a lamp on the workbench was on in the room. Feng Shan was reading a book under the dim light. There was a neat stack of white papers on the table next to him. paper, filled with neat and standardized formulas and derivation - she has completed the design plan.
Feng Nuo walked over and picked up the plan and looked at it. He felt that there was nothing wrong with it. He estimated that the amount of copper used in this plan was not small, and the iron core material also needed to be reprocessed. Fortunately, Qian Yuzhi had ready-made labor, and he was a mechanic by trade.
In the next few days, Feng Nuo applied for machine tool processing hours from the machinery factory and asked Qian Yuzhi to process the silicon steel materials into the designed shapes and sizes for the two suction/rotation plans. Some of the more complicated tasks are done by veteran workers. He personally led Qian Yuzhi and Feng Shan to start the winding machine and made several samples.
The size of the sample is about one circle larger than an adult's fist, which is still acceptable in this era when industrial products are generally stupid, big, black and thick. After power-on test, the suction force is slightly higher than the theoretical value, and the temperature rise of the coil is more obvious. Although in the application of punch card machines, the relay is energized intermittently, it does not rule out that many consecutive cards have holes in a certain hole. It seems that although this Laoshizi punched card computer has no electronic components, it still has to consider heat dissipation issues. Since there is no motor, air cooling is out of the question. Do we need water cooling? Use copper pipes to circulate water to dissipate heat, which also requires considering the sealing and sorting of the pipes - Feng Nuo was a little dumbfounded.
But this was considered a success. Feng Nuo was still in a good mood. He made a report to the Planning Institute, requesting more raw materials, and first produced 100 rotary and suction-type relays.
Then, he called the standard parts factory and asked them when they would have thinner copper wire. Although the relays here are mainly used to drive the mechanical structure, there are also a small number of relays used to control other relays. The suction power of this type of relay is not important, and the power consumption point is better. If you do not want to greatly increase the coil length of the relay, you can only use more Thin copper wire increases resistance and reduces current, and can also reduce the weight and size of the relay.
The standard parts factory's answer is "under testing." As for the progress, it is still "unclear at the moment", but "there is great progress".
"This is designated as model B." Thinking of this, Feng Nuo made a note in the memo. The next step is to sort out the manufacturing process and submit it to the Planning Institute for archiving. He also has to find a meeting with senior officials from the Ministry of Science and Technology and the Electric Power Port to discuss the relay and even future designs. Naming and sizing issues of various electronic components. Having worked in the Planning Institute for a long time, he is very sensitive to such matters, and it is also considered one of his duties - there are not many IT department veterans working in the Planning Institute.
After hearing that Feng Nuo had developed a relay that was completely the version of this space-time, many senior officials came here because of the fame. The purpose of their visit was to allow Fon Nuo to strike while the iron was hot and continue to develop more models and relays for different needs. When he was not finished, it seemed that This thing is not necessary. Once it was developed, demand sprung up like mushrooms after a rain. Some asked him to develop AC relays, some asked him to develop overload/underload protection relays, and some asked him to develop time delay relays. , and even asked him to develop thermal relays and optical relays.
"This has nothing to do with the electromagnetic relays I have made now!" Feng Nuo was complaining in his heart, and at the same time he had to find other excuses to talk about this veteran who was patting his chest and wanted to set up a special electronic equipment factory for him in the Senate. Coax away. Of course, he did not forget that the main direction at the moment was not to develop relays at all, but to quickly complete the tabulating machine.
"It seems that the development of electronic equipment is also very promising." Feng Nuo secretly regretted that he was definitely not as good as the veteran of the power port in this aspect. At the moment, this group of people had no time, so he took the lead and waited for them to react. It is impossible to go to other people's territory to grab food based on your own foundation. It is more reliable to just work on computers honestly.
"But we can cooperate. After they have tubes and transistors, they will not be able to only build radios, televisions and radars. Electronic computers will be a matter of time. By then, the power of our current layout will be seen, and no one can bypass us. Make electronic computers." Feng Nuo thought as he smiled unconsciously, causing Li Janai, who had just entered the workshop, to look at him several times. However, Feng Shan had long been accustomed to her leader's frequent wandering thoughts and turned a blind eye to it.
Among the few people, Li Janai was the last to enter the workshop. She knew neither mechanics nor electricity, nor computer theory; but she seemed to be born for this line of work. She was influenced by everything, and she actually basically understood the working mechanism of relays, even better than Qian Yu. It's even stronger. Feng Nuo asked her to help Feng Shan and be responsible for trial-producing several other types of relays. This made her status in the workshop surpass that of Qian Yuzhi. She always sent him to get raw materials or turn workpieces. Seeing the young man busy being directed by himself, he felt a little inexplicably happy.
Since coming to help Feng Nuo, Li Janai feels that his depressed spirit has been relieved a lot. Compared with Chief Dugu and Chief Lu, Chief Feng is very approachable. Senior Sister Feng Shan is a bit taciturn, but also very gentle and friendly, and there is also a dull Qian Yuzhi.
Looking back, I have never had such a relaxed life since I was born. Naturally, I can’t remember clearly what happened at that time, but it was nothing more than cold and hungry; from the beginning of the quarantine camp, I was the screw of the "organization", and there is no warmth in the "organization"; the atmosphere among the students of the maid school It’s not that good at all, not to mention that she is still a “hidden person” and is always emotionally separated from others. As for the assignment after graduation, this is what happened again...
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Next update: Volume 7 - Guangdong and Guangxi Strategy Chapter 49
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