In a corner of Xiyang City, in a factory in Jiahe Technical School, students gathered next to a steam pump, watching the teacher explain the structure and operating principles of the steam pump.

Because this pump is used for teaching, it is smaller in size, and each moving parts has a logo to indicate what part it is for students to understand.

This is a technical school with four years of study. It was originally a school that was funded by Yingchunlai and other heating trading companies. It taught students how to use, maintain hot water boilers, lay and maintain heating pipelines, and provided cultural and solid theoretical foundations to various trading companies.

Because students have to deal with boilers, Jiahesheng and other trading companies that operate steam pumps also recruit students in technical schools. So the school has opened steam pumps subjects to train qualified graduates.

The heating trading company represented by Yingchun and the steam pump trading company represented by Jiahesheng has increased its business volume year by year, and the demand for technicians is increasing, so the scale of technical schools is also increasing day by day.

The number of students and faculty members in school has exceeded 2,000. The school adopts a flexible admission system. If the student is from a poor family and cannot afford the tuition, he can sign a contract with the school. All normal expenses during the study period shall be borne by the school and pay the debt with his or her salary after graduation.

At the same time, the school also organizes work-study and students who have a two-year study foundation will be organized by the school to work as interns in various trading companies to obtain some wages, and at the same time it will lay the foundation for future formal work.

In short, this is a school that specializes in the training of boiler-related technical personnel. It is very friendly to poor students. As soon as you graduate, you can have a good job. In addition, the price of grain is low, so you can not only support yourself, but also support your family.

It is precisely because of this that technical schools do not have to worry about recruiting students every year, and the same is true for technical schools located in Chang'an, Luoyang, Yecheng, Jinyang and other places.

In recent years, a large number of students who have graduated from various technical schools have become employees of various trading companies, wearing various work clothes and busy in different places.

Some people install hot water boilers and heating pipes in wealthy homes, some people travel around as maintenance personnel, and some are busy at various water conservancy facilities and irrigation stations, working hard to ensure the normal operation of the steam pump.

The emergence of steam boilers has changed some of people's production and lifestyles, and has also changed the fate of many people.

Jiang Lin, the "director" of the technical school, was deeply touched by this.

At this time, he was in the office and was talking about the past. The two of them sighed.

That year, both of them studied in Huangzhou Prefecture. In order to pass the exam and be selected for the officialdom, they were in a similar mood. Because of their poor family, they studied hard together and worked part-time to study together.

Being an official in the exam is the dream of countless students, so the competition for the exam is very fierce. Jiang Lin and Bai Zheng have taken several exams but failed to make it. They are short of money and have a living shortage, so they cannot afford the expense of failing the exam many times and continuing to study, so they can only find another way.

At that time, when the spring was coming, Jiahesheng and other trading companies had just opened, and they urgently needed various technicians. So Jiang Lin and Bai Zheng became apprentices and followed the masters to learn how to use boilers and how to deal with steam.

They were able to write and calculate, and had a brilliant mind. They could learn from one example and learn diligently and ask questions. So they learned very quickly. In a few years, they became technical backbones, and their salary was no less than three cents a month.

At this point, the two parted ways with their state classmates and walked a different path. Although they did not become officials, they had a stable job, a considerable income, and their own home, which also improved their family's lives.

Then they were transferred to a newly built technical school to be a teacher and formulate a syllabus.

Later, Jiang Lin and Bai Zheng, as technical backbone, embarked on different paths: Jiang Lin continued to be a teacher and earned a considerable salary while not having to run around and take care of his family, and Bai Zheng was selected into the Steamship Research Team.

In the blink of an eye, several years have passed. Bai Zheng, who has been busy with technical research, took advantage of the few days of vacation to visit relatives and friends everywhere, so today I found my old friend Jiang Lin and talked about the past.

The day before yesterday, the pilot ship was successfully tested, and Jiang Lin was also on the scene. He was very happy that his old friend's efforts finally came to fruition, but Bai Zheng could not tell the inside story, so he felt helpless in the face of Jiang Lin's congratulations.

The two of them reminisced about the past, and as they were talking, the topic turned to the steam pump unknowingly. Bai Zheng still couldn't put down the steamer and was still thinking about several technical difficulties. So this time he asked Jiang Lin to reminisce about the past, and there was also the intention of asking for advice.

She wanted to know what breakthroughs have been made in today's steam pumps, or what new technologies have been made, which may also help him solve the problems encountered by steamships.

However, it did not.

Although Jiang Lin teaches in school, he is still very familiar with the situation in the industry. After all, what the school teaches must be knowledge that needs to be exposed to in actual applications. The technical school will know clearly what new progress has been made in steam boilers or steam pumps.

Jiang Lin didn't know why Bai Zheng wanted to inquire about the new progress of the steam boiler, but his old friend had a rare trip, so he took the other party to the campus and let Bai Zheng see what the scale of the current technical school is.

After walking around the campus, the two finally came to the steam pump for teaching. They saw young students forming a circle and listening to the teacher explaining the structure and operating principles of the steam pump. They couldn't help but remember what they looked like when they were studying, stood aside and started talking.

It is class time now, so the conversation between the two is very small, but Bai Zheng's attention quickly fell on the pump of the steam pump.

The pump pump is different from the pump pump he remembers. Simply put, the straight tubular pump in front of him can pump water at both ends.

Since ancient times, the pump has been pumping water in one direction. A person holds the pump in his left hand and the pump in his right hand. Pulling the pump back is to pump water, and then pushing the pump forward is to shoot water. The water in and out is to go in and out at one end of the pump.

The same is true for the pump pump of a steam pump, but there are two check valves in the pump pump with opposite directions, one inlet and the other outlet.

But now it's different. Bai Zheng saw this new pump pump, and there is also a pipeline at the back end, which means that water pumping and draining can be performed at both ends of the pump, and the pumping rod of the pump pump does not add additional actions.

Therefore, this design directly improves the water pumping efficiency of the steam pump.

Bai Zheng looked at the pump and suddenly entered a state of meditation, because this thing made him think of some possibility.

Seeing him like this, Jiang Lin smiled: "Hey, this kind of pumping pump is called a two-way pump, which means two-way pumping. It does not double the pumping efficiency, which increases by about 60%. After all, the resistance to water is there..."

"But this is also an amazing improvement. In addition to some other improvements, the court decided to promote steam pumps. Otherwise, with the coal consumption of steam pumps, it would be really..."

Seeing Bai Zheng staring at the pump, Jiang Lin didn't move, as if something was wrong, he asked, "Why, do you... don't know?"

Bai Zheng suddenly grabbed Jiang Lin's hand and asked, "When did this improvement occur?"

"When? Uh...I think about it..." Jiang Lin thought for a moment and replied, "It was probably almost two years ago..."

"Two years ago? Then... why didn't you say it earlier?"

Jiang Lin felt puzzled when he heard this: "I said it earlier? What did you say? Every time you ask, you ask about the improvement of the cylinder and the progress of the boiler. I have never asked about the pump... Besides, this kind of two-way pump is now used for steam pumps, and the old pumps have been replaced, you..."
Chapter completed!