That night went by quickly. Zhao Yuemin remembered that Su Hong held his arm, and the two sat side by side in front of the window and had a long talk. Talk about everyone who is familiar with each other in the oil field, talk about the campus life of Peking University, and talk about revolutionary ideals.

Zhao Yuemin clenched Su Hong's hand tightly, feeling that a steady stream of heat was pouring into his body. He looked at Su Hong, who was leaning on his shoulder, looking at the long black waterfall-like hair, and still seemed to feel that it was a dream.

That night, Zhao Yuemin left Su Hong's house at twelve o'clock. He saw Su Guoliang smoking in the aisle, and there were already a pile of cigarette butts on the ground, so he greeted Su Guoliang embarrassedly and left.

The relationship between Zhao Yuemin and Su Hong was soon announced to the public.

He went to work half an hour early on weekdays, so he rode his bicycle and waited for her at Su Hong's door. Then, in the envious eyes of everyone, pick her up, take a turn around the rape field, ride on the field path for a while, and go around Shaohu Lake.

When Comrade Xiao Dekai heard the news, he scolded Zhao Yuemin for defecting to the enemy and treason, he walked to the Shao Lake, took off his shoes, and went into the water to sacrifice himself. A few days later, when he received a few Hongta Mountains from Zhao Yuemin, he realized that the raw rice had been cooked, so he stopped complaining and went to find other potential marriage partners.

During the summer vacation, Su Hong stayed behind to provide translation cooperation for Japanese technicians.

The main task of the institute is to improve the rotary drilling rig. Zhao Chunda and Tokugawa Shoichi, in order to improve the drilling rig, held meetings and revised drawings day and night. In addition to solving the most critical problem of loose follower frame, Zhao Chunda also proposed to improve the mud pump system of the rotary drilling rig.

Mud pump refers to the equipment that delivers mud or water and other flushing fluids to the borehole during the drilling process, and is also one of the most critical equipment of the drilling rig, known as the "heart" of drilling. The improved mud pump is a significant improvement in the performance of the rotary drilling rig.

In the conference room, Zhao Chunda pointed to the whiteboard on the wall and introduced to the attendees: "Nissan rotary drilling rig is equipped with a double-cylinder double-acting mud pump. In my opinion, compared with the three-cylinder single-acting mud pump, there are defects in the structure and performance of the pump. ”

"Director Zhao, what do you think are the flaws?" Fujii asked respectfully.

Whenever Zhao Chunda speaks, Fujii and other Japanese researchers will concentrate on taking notes, Zhao Chunda is the designer of the most original drawings of the rotary drilling rig, and the hope of improvement is pinned on him.

"The flaws are obvious." Zhao Chunda defined, "The structure of the hydraulic end is complex, the volume is large, the pressure fluctuates greatly, and the displacement is uneven. low mechanical efficiency, etc. Tokugawa, Fujii, I think that the mud pump system equipped with the current rotary drilling rig can no longer meet the needs of the jet drilling process. The jet drilling process requires the use of high pump pressure and high-power mud to increase the drilling rate. Therefore, a three-cylinder single-acting pump must be used. But with what three-cylinder pump? ”

Zhao Chunda looked around, glanced at Zhao Yuemin, and said with a smile: "Yuemin, you can talk about it." ”

"Okay." Zhao Yuemin stood up and said, "I think that in the choice of three-cylinder pumps, there are PN630 pumps produced by Daqing Petrochemical Machinery Factory and F320 pumps produced by the United States National Supply Corporation. If you choose the PN630 pump of Daqing Petrochemical Machinery Factory, the power of the mud pump must reach 1250 horsepower, so as not to cause power waste or insufficiency, and the speed of the pump driving shaft must reach 300 revolutions per minute to ensure that the sprocket transmission ratio is reasonable. ”

Zhao Yuemin has been teaching himself mechanical drawing techniques lately, and has taken the initiative to discuss with his father the improvement of rotary drilling rigs. Gradually, he discovered that he could also participate in scientific research improvement projects.

When Zhao Yuemin introduced, Su Hong sat next to him as a translator and looked at him with a smile. Being able to share a room with her boyfriend, even if it's a mechanical issue that she's not very interested in, makes her feel happy.

Tokugawa Shoichi listened to Zhao Yuemin's speech with a smile on the side. He was amazed at the rapid progress of this young factory director, and he had a deep understanding and mastery of the structure of the rotary drilling rig.

"Oh, Yuemin, that's a good point." Tokugawa Masaichi smiled and said, "What if we use an American-made F320 pump?" ”

"If we choose the F320 pump, there will be a lot of problems." Zhao Yuemin frowned and said, "The pump uses partial perfusion, and there is not much problem when pumping some low-specific gravity slurry." However, if it is some high-specific gravity and high-viscosity slurry, the pressure will be too small. ”

"Too little stress? So how to fix it? ”

"I think it has to be boosted with a perfusion pump, otherwise it won't work. And the perfusion pump should not be driven by the driving shaft of the mud, so as not to cause waste of power. Zhao Yuemin looked at the researchers and said his thoughts, "The perfusion pump must be driven separately. Add a 200 watt engine to power the mud pump. ”

Tokugawa nodded, looked at Teng Jing next to him, and said, "Fujii, you are my deputy, and you are also the deputy chief engineer involved in the design of the rotary drilling rig. Do you have an opinion? ”

Fujii thought to himself that Zhao Yuemin had already figured out the replacement performance of the mud pump, what else did he say?

He continued: "I think that according to the opinion of Director Zhao, these two mud pumps were selected to test the performance compatibility with the rotary drilling rig. ”

"Okay, Yuemin, you are responsible for greeting the provincial industry for the prototype of the mud pump in the United States, and strive to import it as soon as possible." Zhao Chunda commanded.

"Understood." Zhao Yuemin nodded.

At night, the institute is brightly lit. The workers of the factory, at five o'clock, left work on time. Japanese researchers are still doing their research diligently. Tokugawa Shoichi greeted the Friendship Hotel, and basically the dinner was sushi and miso soup, which was sent directly to the research institute, which also saved the researchers from wasting time when they went out.

Zhao Yuemin sat in the conference room and continued to prepare the production plan. Since Su Hong's summer internship at the institute, he has also used the conference room of the institute as his office.

The two of them sat side by side at the narrow conference table looking at the materials, and the researchers passing by were no longer surprised.

"Yuemin, is there still a shortage of people in your research institute?" Su Hong took Zhao Yuemin's arm and said, "In our Department of Mechanical Engineering of Peking University, there are many boys who are quite good. Why don't I go back to school and ask them where they are going after graduation? Let them also fight for the oil fields. ”

"Don't, don't, don't." Zhao Yuemin immediately waved his hand.

"What? Look down on us Peking University? Su Hong pouted.

"Of course not. I'm just afraid that when you talk to them, you attract a few innocent and innocent young men...... I can't rest assured. Zhao Yuemin said with a smile.