Chapter 3: Hydraulic Cooling and Heating Calculation Formula

Meng Jianye was stunned for a moment, stared at it carefully, and said in his heart that it was really the smelly and hard cow dung egg, and his face couldn't help but sink, and he didn't say in a good voice: "I knew that it was your Niu master who was on duty, and I would have been hiding as far as I could, but unfortunately there was no way, the factory director asked me to come, so I could only come in." ”

The middle-aged man with a greasy face was also stunned when he heard this, and immediately wiped it on his face with his greasy hand, revealing a face with a bit of mockery: "Just you? The factory director asked you to come? What can a man who plays with a pen do? He will only whitewash the peace all day long, and a good factory will have to let him finish tossing sooner or later." ”

"Niu Chen, who do you say finished tossing the factory?" Before Niu Chen, who was covered in oil, did not finish speaking, Jiao Dalin's unkind words came from the gangway, Niu Chen's face froze, raised his eyes and glanced at Jiao Dalin, who was frowning, and immediately glanced to the side, not taking Jiao Dalin, the factory director, in his eyes at all.

Seeing this, Jiao Dalin just shook his head with a wry smile, and didn't say anything, and the people around him just secretly glanced at this side when they saw this, and then continued to work with their heads down, no way, it was a cow dung egg that even the factory director had a headache, his temper was stinky and hard, and if he didn't open his mouth, as long as he spoke, he would definitely make you lose his temper, so that the personal relationship was quite bad.

But it is such a cow dung egg that is not welcome to be seen there, but it has this good craft, whether it is machine repair or electric welding, it can be said that it can afford everything, plus its own technical knowledge of the ship, so whenever the shipyard encounters technical difficulties, this notorious cow dung egg can always shine.

So much so that the whole factory loves and hates Niu Chen.

Jiao Dalin told the truth that Niu Chen's heart was also very complicated, when the head of the technical section used the excuse to run the relationship, and the master of the top beam of the workshop asked for leave to go to the factory to earn extra money, Niu Chen was able to stuff in this cabin with a handful of oil and sweat to carry out maintenance, this spirit is also commendable.

But the stinky mouth that scares the dead and the angry attitude that is not used to it tears apart the good and valuable spirit.

"Give Xiaomeng an hour and let him see if there is a problem with the hydraulic system!"

Although Niu Chen's attitude was vicious, Jiao Dalin did not overwhelm people for this, but calmly explained, and prepared to take Meng Jianye in.

But before he could take a step, Niu Chen stretched out his hand to stop Jiao Dalin, and immediately glanced at Meng Jianye's immature face with a little baby fat, and raised his chin: "Just him, check the hydraulic system? He is so big, and he doesn't know if he has never seen the hydraulic system, Director Jiao, you dare to hand over such an important thing to a hairy boy who can only brush the pen?"

"If you can, why can't you even find the cause of the fault for so long? Don't tell me that the tugboat is technically complicated, you can't figure it out. Jiao Dalin raised his eyebrows and looked directly at Niu Chen.

Niu Chen's rare old face turned red, and the hand that stopped in front of Jiao Dalin fell unnaturally, Jiao Dalin didn't care that his cheeks were red for a while, and Niu Chen, who was white for a while, greeted Meng Jianye and got into the cabin.

Meng Jianye followed, raised his legs and stepped in, and immediately a 6135 marine diesel engine produced by Zhongdu Diesel Engine Factory came into view.

However, Meng Jianye didn't care about the diesel engine on the engine compartment, but leaned down and found a pump valve along a few pipelines, wiped off the oil stains on it with his hands, looked at the parameters engraved on it, and immediately shook the connected pipelines vigorously, then turned around and walked towards the next pump valve node.

After looking around like this, Meng Jianye stood up and pulled a towel from the toolbox next to him to wipe the grease stains on his hands, and then took out a pen and a small notebook with a blue cover from his jacket pocket, and began to write on it as if no one was around.

Niu Chen, who followed up with him, was still a little nervous when he watched Meng Jianye check the hydraulic valve at first, for fear that this stunned young man would not know how to pretend to understand, and he would break good things in a hurry.

But when he saw that Meng Jianye just looked at the parameters above, and then shook the connected hydraulic pipe, he couldn't help but feel a little contempt when he put down his hanging heart.

Meng Jianye entered the factory almost at the same time as the factory director Jiao Dalin, which is nothing, but Meng Jianye's position is a propaganda officer.

It was a few good positions in the whole plant that were not dirty or tired, and there were opportunities to do it, coupled with some rumors about the director of Jiao, so the gossip that Meng Jianye was a related household of the director of Jiao spread in the factory.

It is impossible to test whether others believe it or not, anyway, Niu Chen, who is angry and young, believes it, and his sense of Meng Jianye can be imagined.

Because of this, when he saw Meng Jianye take out a small notebook and start writing and drawing, he couldn't help but pouted and snorted coldly: "You can investigate and deal with faults with a pen, I have been doing ship maintenance for more than ten years and I have seen it for the first time, alas...... I said, Director Jiao, is it possible that now our factory does not use pliers, wrenches and instruments to find faults, but uses a pen instead?"

Niu Chen's yin and yang weird tone, with gloating that could not be concealed, although Jiao Dalin's face looked as usual, the disappointment in his eyes was still overflowing, although he knew that letting Meng Jianye come was just an attempt to be a dead horse as a live horse doctor.

But Jiao Dalin still had some hope in his heart, but he had seen the fault check, but he had never seen Meng Jianye check like this, only looked at a few hydraulic pump valves, and began to write and draw with a pen.

How can Jiao Dalin continue his hope?

So before Niu Chen's words were finished, Jiao Dalin sighed in disappointment, and was about to beckon Meng Jianye to leave the cabin.

But just as he was about to open his mouth but did not speak, Meng Jianye, who was writing, suddenly stopped his pen and exhaled a long breath: "The heat loss of the hydraulic pump is 6.24 times 10 to the eighth joules per hour, the heat loss of the hydraulic motor is 7.3 times 10 to the eighth joules per hour, and the heat loss generated by the oil passing through the valve hole is 5.6 times 10 to the eighth joules per hour.

The total heat obtained by adding it and dividing it by the heat capacity ratio gives a rated temperature value of 65 degrees Celsius, but in fact, after I bring the figures such as heat dissipation area, transmission ratio heat of oil and hydraulic mechanism, and heat dissipation coefficient into the actual heat formula, I get that the actual temperature is 82 degrees Celsius, which is 17 degrees Celsius higher than the rated temperature value. ”

Speaking of this, Meng Jianye's words paused, then turned his somewhat stiff wrist, raised his head and smiled at the few people in the engine room and concluded: "So the conclusion is already obvious, that is, the high temperature of the hydraulic system leads to internal mechanical wear, resulting in inconvenient hull maneuvering and frequent failures. ”

As soon as these words came out, the people in the cabin all looked at Meng Jianye with incredible eyes, and even the workers who were working near the cabin stopped what they were doing, stretched out their necks from the cabin door, and looked at Meng Jianye like a monster.

Not to mention Niu Chen, who was still laughing at Meng Jianye before, he had already been petrified, and the whole person stood straight at the door of the cabin, until the waves hit the hull of the ship, making Niu Chen stumble before he came to his senses, but Rao was like this, he still looked at Meng Jianye with a shocked face, and asked in his mouth: "You ...... You...... How did you do that?"

Hearing this, Meng Jianye raised the small notebook in his hand and replied very casually: "What do you say? Are these calculated values? Of course, they are calculated using hydraulic hot and cold formulas!"